diff --git a/notebooks/jstor-data-and-analysis.ipynb b/notebooks/jstor-data-and-analysis.ipynb
index 42bde2e..10d2eea 100644
--- a/notebooks/jstor-data-and-analysis.ipynb
+++ b/notebooks/jstor-data-and-analysis.ipynb
@@ -52,7 +52,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": 3,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -97,7 +97,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 6,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -106,7 +106,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": 7,
    "metadata": {},
    "outputs": [
     {
@@ -192,7 +192,7 @@
        "3    Hardy  15.349370  23.185265  20.805369  15.021459   9.805285  11.484423"
       ]
      },
-     "execution_count": 3,
+     "execution_count": 7,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -203,18 +203,18 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": 8,
    "metadata": {},
    "outputs": [],
    "source": [
     "vs_authors_df = vs_authors_df.melt(id_vars=[\"Author\"], \n",
     "        var_name = \"Decade\",\n",
-    "                                   value_name=\"Value\")"
+    "                                   value_name=\"Percentage_of_Documents\")"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": 9,
    "metadata": {},
    "outputs": [
     {
@@ -240,7 +240,7 @@
        "      <th></th>\n",
        "      <th>Author</th>\n",
        "      <th>Decade</th>\n",
-       "      <th>Value</th>\n",
+       "      <th>Percentage_of_Documents</th>\n",
        "    </tr>\n",
        "  </thead>\n",
        "  <tbody>\n",
@@ -393,34 +393,34 @@
        "</div>"
       ],
       "text/plain": [
-       "     Author Decade      Value\n",
-       "0    Bronte  1960s   4.238259\n",
-       "1   Dickens  1960s  25.429553\n",
-       "2     Eliot  1960s  21.534937\n",
-       "3     Hardy  1960s  15.349370\n",
-       "4    Bronte  1970s  10.292524\n",
-       "5   Dickens  1970s  29.902492\n",
-       "6     Eliot  1970s  23.618635\n",
-       "7     Hardy  1970s  23.185265\n",
-       "8    Bronte  1980s  11.409396\n",
-       "9   Dickens  1980s  30.285235\n",
-       "10    Eliot  1980s  29.194631\n",
-       "11    Hardy  1980s  20.805369\n",
-       "12   Bronte  1990s  11.659514\n",
-       "13  Dickens  1990s  25.894134\n",
-       "14    Eliot  1990s  22.031474\n",
-       "15    Hardy  1990s  15.021459\n",
-       "16   Bronte  2000s   8.901252\n",
-       "17  Dickens  2000s  25.173853\n",
-       "18    Eliot  2000s  23.922114\n",
-       "19    Hardy  2000s   9.805285\n",
-       "20   Bronte  2010s   0.122175\n",
-       "21  Dickens  2010s  25.656689\n",
-       "22    Eliot  2010s  22.052535\n",
-       "23    Hardy  2010s  11.484423"
+       "     Author Decade  Percentage_of_Documents\n",
+       "0    Bronte  1960s                 4.238259\n",
+       "1   Dickens  1960s                25.429553\n",
+       "2     Eliot  1960s                21.534937\n",
+       "3     Hardy  1960s                15.349370\n",
+       "4    Bronte  1970s                10.292524\n",
+       "5   Dickens  1970s                29.902492\n",
+       "6     Eliot  1970s                23.618635\n",
+       "7     Hardy  1970s                23.185265\n",
+       "8    Bronte  1980s                11.409396\n",
+       "9   Dickens  1980s                30.285235\n",
+       "10    Eliot  1980s                29.194631\n",
+       "11    Hardy  1980s                20.805369\n",
+       "12   Bronte  1990s                11.659514\n",
+       "13  Dickens  1990s                25.894134\n",
+       "14    Eliot  1990s                22.031474\n",
+       "15    Hardy  1990s                15.021459\n",
+       "16   Bronte  2000s                 8.901252\n",
+       "17  Dickens  2000s                25.173853\n",
+       "18    Eliot  2000s                23.922114\n",
+       "19    Hardy  2000s                 9.805285\n",
+       "20   Bronte  2010s                 0.122175\n",
+       "21  Dickens  2010s                25.656689\n",
+       "22    Eliot  2010s                22.052535\n",
+       "23    Hardy  2010s                11.484423"
       ]
      },
-     "execution_count": 5,
+     "execution_count": 9,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -431,23 +431,23 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 6,
+   "execution_count": 10,
    "metadata": {},
    "outputs": [],
    "source": [
-    "vs_authors_df['Value'] = vs_authors_df['Value']* 0.01"
+    "vs_authors_df['Percentage_of_Documents'] = vs_authors_df['Percentage_of_Documents']* 0.01"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": 11,
    "metadata": {},
    "outputs": [],
    "source": [
     "line = alt.Chart(vs_authors_df, title=\"Frequency of author references in *Victorian Studies*\").mark_line().encode(\n",
     "    x=alt.X('Decade', title=\"Decade\",type='ordinal', sort='ascending', \n",
     "                                                            axis=alt.Axis(labelAngle=0, labelExpr='datum.value')), \n",
-    "    y=alt.Y('Value:Q', title=\"Percent of Documents\", axis=alt.Axis(labelAngle=0, format=\"%\")),\n",
+    "    y=alt.Y('Percentage_of_Documents:Q', title=\"Percent of Documents\", axis=alt.Axis(labelAngle=0, format=\"%\")),\n",
     "    color=alt.Color('Author:O', scale=alt.Scale(scheme='greys'),legend=None),\n",
     ")\n",
     "\n",
@@ -481,7 +481,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": 12,
    "metadata": {},
    "outputs": [
     {
@@ -489,23 +489,23 @@
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        "</style>\n",
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@@ -551,14 +551,14 @@
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        "</script>"
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       "text/plain": [
        "alt.LayerChart(...)"
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-     "execution_count": 8,
+     "execution_count": 12,
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@@ -569,14 +569,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 9,
+   "execution_count": 13,
    "metadata": {},
    "outputs": [],
    "source": [
     "line = alt.Chart(vs_authors_df, title=\"Frequency of author references in *Victorian Studies*\").mark_line().encode(\n",
     "    x=alt.X('Decade', title=\"Decade\",type='ordinal', sort='ascending', \n",
     "                                                            axis=alt.Axis(labelAngle=0, labelExpr='datum.value')), \n",
-    "    y=alt.Y('Value:Q', title=\"Percent of Documents\", axis=alt.Axis(labelAngle=0, format=\"%\")),\n",
+    "    y=alt.Y('Percentage_of_Documents:Q', title=\"Percent of Documents\", axis=alt.Axis(labelAngle=0, format=\"%\")),\n",
     "    color=alt.Color('Author:O', scale=alt.Scale(scheme='category20'),legend=None),\n",
     ")\n",
     "\n",
@@ -610,7 +610,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 10,
+   "execution_count": 14,
    "metadata": {},
    "outputs": [
     {
@@ -618,23 +618,23 @@
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        "</style>\n",
-       "<div id=\"altair-viz-ed522e313cf245539042967d856fad84\"></div>\n",
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-       "  })({\"config\": {\"view\": {\"continuousWidth\": 300, \"continuousHeight\": 300}, \"axis\": {\"labelFontSize\": 14, \"titleFontSize\": 14}, \"legend\": {\"labelFontSize\": 14, \"titleFontSize\": 11}}, \"layer\": [{\"mark\": {\"type\": \"line\"}, \"encoding\": {\"color\": {\"field\": \"Author\", \"legend\": null, \"scale\": {\"scheme\": \"category20\"}, \"type\": \"ordinal\"}, \"x\": {\"axis\": {\"labelAngle\": 0, \"labelExpr\": \"datum.value\"}, \"field\": \"Decade\", \"sort\": \"ascending\", \"title\": \"Decade\", \"type\": \"ordinal\"}, \"y\": {\"axis\": {\"format\": \"%\", \"labelAngle\": 0}, \"field\": \"Value\", \"title\": \"Percent of Documents\", \"type\": \"quantitative\"}}, \"title\": \"Frequency of author references in *Victorian Studies*\"}, {\"mark\": {\"type\": \"point\", \"filled\": true}, \"encoding\": {\"color\": {\"field\": \"Author\", \"scale\": {\"scheme\": \"category20\"}, \"type\": \"ordinal\"}, \"shape\": {\"field\": \"Author\", \"scale\": {\"range\": [\"circle\", \"cross\", \"square\", \"triangle-right\", \"diamond\"]}, \"type\": \"ordinal\"}, \"size\": {\"field\": \"Author\", \"legend\": null, \"scale\": {\"domain\": [\"Eliot\", \"Dickens\", \"Bronte\", \"Hardy\"], \"range\": [200, 200]}, \"type\": \"ordinal\"}, \"x\": {\"axis\": {\"labelAngle\": 0, \"labelExpr\": \"datum.value\"}, \"field\": \"Decade\", \"sort\": \"ascending\", \"title\": \"Decade\", \"type\": \"ordinal\"}, \"y\": {\"axis\": {\"format\": \"%\", \"labelAngle\": 0}, \"field\": \"Value\", \"title\": \"Percent of Documents\", \"type\": \"quantitative\"}}, \"title\": \"Frequency of author references in *Victorian Studies*\"}], \"data\": {\"name\": \"data-32429164bfb7fee205b0b4390e3d4df0\"}, \"resolve\": {\"scale\": {\"color\": \"independent\", \"shape\": \"independent\"}}, \"width\": 400, \"$schema\": \"https://vega.github.io/schema/vega-lite/v5.15.1.json\", \"datasets\": {\"data-32429164bfb7fee205b0b4390e3d4df0\": [{\"Author\": \"Bronte\", \"Decade\": \"1960s\", \"Value\": 0.042382588774341354}, {\"Author\": \"Dickens\", \"Decade\": \"1960s\", \"Value\": 0.2542955326460481}, {\"Author\": \"Eliot\", \"Decade\": \"1960s\", \"Value\": 0.21534936998854526}, {\"Author\": \"Hardy\", \"Decade\": \"1960s\", \"Value\": 0.1534936998854525}, {\"Author\": \"Bronte\", \"Decade\": \"1970s\", \"Value\": 0.10292524377031419}, {\"Author\": \"Dickens\", \"Decade\": \"1970s\", \"Value\": 0.2990249187432286}, {\"Author\": \"Eliot\", \"Decade\": \"1970s\", \"Value\": 0.23618634886240522}, {\"Author\": \"Hardy\", \"Decade\": \"1970s\", \"Value\": 0.2318526543878657}, {\"Author\": \"Bronte\", \"Decade\": \"1980s\", \"Value\": 0.11409395973154363}, {\"Author\": \"Dickens\", \"Decade\": \"1980s\", \"Value\": 0.3028523489932886}, {\"Author\": \"Eliot\", \"Decade\": \"1980s\", \"Value\": 0.29194630872483224}, {\"Author\": \"Hardy\", \"Decade\": \"1980s\", \"Value\": 0.20805369127516782}, {\"Author\": \"Bronte\", \"Decade\": \"1990s\", \"Value\": 0.11659513590844064}, {\"Author\": \"Dickens\", \"Decade\": \"1990s\", \"Value\": 0.25894134477825465}, {\"Author\": \"Eliot\", \"Decade\": \"1990s\", \"Value\": 0.2203147353361945}, {\"Author\": \"Hardy\", \"Decade\": \"1990s\", \"Value\": 0.15021459227467812}, {\"Author\": \"Bronte\", \"Decade\": \"2000s\", \"Value\": 0.08901251738999999}, {\"Author\": \"Dickens\", \"Decade\": \"2000s\", \"Value\": 0.2517385257301808}, {\"Author\": \"Eliot\", \"Decade\": \"2000s\", \"Value\": 0.2392211405}, {\"Author\": \"Hardy\", \"Decade\": \"2000s\", \"Value\": 0.09805285118219749}, {\"Author\": \"Bronte\", \"Decade\": \"2010s\", \"Value\": 0.001221747098350641}, {\"Author\": \"Dickens\", \"Decade\": \"2010s\", \"Value\": 0.2565668906536347}, {\"Author\": \"Eliot\", \"Decade\": \"2010s\", \"Value\": 0.2205253512522908}, {\"Author\": \"Hardy\", \"Decade\": \"2010s\", \"Value\": 0.1148442272449603}]}}, {\"mode\": \"vega-lite\"});\n",
+       "  })({\"config\": {\"view\": {\"continuousWidth\": 300, \"continuousHeight\": 300}, \"axis\": {\"labelFontSize\": 14, \"titleFontSize\": 14}, \"legend\": {\"labelFontSize\": 14, \"titleFontSize\": 11}}, \"layer\": [{\"mark\": {\"type\": \"line\"}, \"encoding\": {\"color\": {\"field\": \"Author\", \"legend\": null, \"scale\": {\"scheme\": \"category20\"}, \"type\": \"ordinal\"}, \"x\": {\"axis\": {\"labelAngle\": 0, \"labelExpr\": \"datum.value\"}, \"field\": \"Decade\", \"sort\": \"ascending\", \"title\": \"Decade\", \"type\": \"ordinal\"}, \"y\": {\"axis\": {\"format\": \"%\", \"labelAngle\": 0}, \"field\": \"Percentage_of_Documents\", \"title\": \"Percent of Documents\", \"type\": \"quantitative\"}}, \"title\": \"Frequency of author references in *Victorian Studies*\"}, {\"mark\": {\"type\": \"point\", \"filled\": true}, \"encoding\": {\"color\": {\"field\": \"Author\", \"scale\": {\"scheme\": \"category20\"}, \"type\": \"ordinal\"}, \"shape\": {\"field\": \"Author\", \"scale\": {\"range\": [\"circle\", \"cross\", \"square\", \"triangle-right\", \"diamond\"]}, \"type\": \"ordinal\"}, \"size\": {\"field\": \"Author\", \"legend\": null, \"scale\": {\"domain\": [\"Eliot\", \"Dickens\", \"Bronte\", \"Hardy\"], \"range\": [200, 200]}, \"type\": \"ordinal\"}, \"x\": {\"axis\": {\"labelAngle\": 0, \"labelExpr\": \"datum.value\"}, \"field\": \"Decade\", \"sort\": \"ascending\", \"title\": \"Decade\", \"type\": \"ordinal\"}, \"y\": {\"axis\": {\"format\": \"%\", \"labelAngle\": 0}, \"field\": \"Percentage_of_Documents\", \"title\": \"Percent of Documents\", \"type\": \"quantitative\"}}, \"title\": \"Frequency of author references in *Victorian Studies*\"}], \"data\": {\"name\": \"data-f76f9186da8eefd121489d74b532d565\"}, \"resolve\": {\"scale\": {\"color\": \"independent\", \"shape\": \"independent\"}}, \"width\": 400, \"$schema\": \"https://vega.github.io/schema/vega-lite/v5.15.1.json\", \"datasets\": {\"data-f76f9186da8eefd121489d74b532d565\": [{\"Author\": \"Bronte\", \"Decade\": \"1960s\", \"Percentage_of_Documents\": 0.042382588774341354}, {\"Author\": \"Dickens\", \"Decade\": \"1960s\", \"Percentage_of_Documents\": 0.2542955326460481}, {\"Author\": \"Eliot\", \"Decade\": \"1960s\", \"Percentage_of_Documents\": 0.21534936998854526}, {\"Author\": \"Hardy\", \"Decade\": \"1960s\", \"Percentage_of_Documents\": 0.1534936998854525}, {\"Author\": \"Bronte\", \"Decade\": \"1970s\", \"Percentage_of_Documents\": 0.10292524377031419}, {\"Author\": \"Dickens\", \"Decade\": \"1970s\", \"Percentage_of_Documents\": 0.2990249187432286}, {\"Author\": \"Eliot\", \"Decade\": \"1970s\", \"Percentage_of_Documents\": 0.23618634886240522}, {\"Author\": \"Hardy\", \"Decade\": \"1970s\", \"Percentage_of_Documents\": 0.2318526543878657}, {\"Author\": \"Bronte\", \"Decade\": \"1980s\", \"Percentage_of_Documents\": 0.11409395973154363}, {\"Author\": \"Dickens\", \"Decade\": \"1980s\", \"Percentage_of_Documents\": 0.3028523489932886}, {\"Author\": \"Eliot\", \"Decade\": \"1980s\", \"Percentage_of_Documents\": 0.29194630872483224}, {\"Author\": \"Hardy\", \"Decade\": \"1980s\", \"Percentage_of_Documents\": 0.20805369127516782}, {\"Author\": \"Bronte\", \"Decade\": \"1990s\", \"Percentage_of_Documents\": 0.11659513590844064}, {\"Author\": \"Dickens\", \"Decade\": \"1990s\", \"Percentage_of_Documents\": 0.25894134477825465}, {\"Author\": \"Eliot\", \"Decade\": \"1990s\", \"Percentage_of_Documents\": 0.2203147353361945}, {\"Author\": \"Hardy\", \"Decade\": \"1990s\", \"Percentage_of_Documents\": 0.15021459227467812}, {\"Author\": \"Bronte\", \"Decade\": \"2000s\", \"Percentage_of_Documents\": 0.08901251738999999}, {\"Author\": \"Dickens\", \"Decade\": \"2000s\", \"Percentage_of_Documents\": 0.2517385257301808}, {\"Author\": \"Eliot\", \"Decade\": \"2000s\", \"Percentage_of_Documents\": 0.2392211405}, {\"Author\": \"Hardy\", \"Decade\": \"2000s\", \"Percentage_of_Documents\": 0.09805285118219749}, {\"Author\": \"Bronte\", \"Decade\": \"2010s\", \"Percentage_of_Documents\": 0.001221747098350641}, {\"Author\": \"Dickens\", \"Decade\": \"2010s\", \"Percentage_of_Documents\": 0.2565668906536347}, {\"Author\": \"Eliot\", \"Decade\": \"2010s\", \"Percentage_of_Documents\": 0.2205253512522908}, {\"Author\": \"Hardy\", \"Decade\": \"2010s\", \"Percentage_of_Documents\": 0.1148442272449603}]}}, {\"mode\": \"vega-lite\"});\n",
        "</script>"
       ],
       "text/plain": [
        "alt.LayerChart(...)"
       ]
      },
-     "execution_count": 10,
+     "execution_count": 14,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -705,7 +705,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 11,
+   "execution_count": 15,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -714,7 +714,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 12,
+   "execution_count": 16,
    "metadata": {},
    "outputs": [
     {
@@ -806,7 +806,7 @@
        "3  6.536347  "
       ]
      },
-     "execution_count": 12,
+     "execution_count": 16,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -817,34 +817,34 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 13,
+   "execution_count": 17,
    "metadata": {},
    "outputs": [],
    "source": [
     "vs_titles_df = vs_titles_df.melt(id_vars=[\"Title\"], \n",
     "        var_name = \"Decade\",\n",
-    "                                   value_name=\"Value\")"
+    "                                   value_name=\"Percentage_of_Documents\")"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 14,
+   "execution_count": 18,
    "metadata": {},
    "outputs": [],
    "source": [
-    "vs_titles_df['Value'] = vs_titles_df['Value']* 0.01"
+    "vs_titles_df['Percentage_of_Documents'] = vs_titles_df['Percentage_of_Documents']* 0.01"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 15,
+   "execution_count": 19,
    "metadata": {},
    "outputs": [],
    "source": [
     "line = alt.Chart(vs_titles_df, title=\"Frequency of title references in *Victorian Studies*\").mark_line().encode(\n",
     "    x=alt.X('Decade', title=\"Decade\",type='ordinal', sort='ascending', \n",
     "                                                            axis=alt.Axis(labelAngle=0, labelExpr='datum.value')), \n",
-    "    y=alt.Y('Value:Q', title=\"Percent of Documents\", axis=alt.Axis(labelAngle=0, format=\"%\")),\n",
+    "    y=alt.Y('Percentage_of_Documents:Q', title=\"Percent of Documents\", axis=alt.Axis(labelAngle=0, format=\"%\")),\n",
     "    color=alt.Color('Title:O', scale=alt.Scale(scheme='greys'),legend=None),\n",
     ")\n",
     "\n",
@@ -878,7 +878,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 16,
+   "execution_count": 20,
    "metadata": {
     "scrolled": true
    },
@@ -888,23 +888,23 @@
       "text/html": [
        "\n",
        "<style>\n",
-       "  #altair-viz-467095e8a7e248c58e533ec34f0de232.vega-embed {\n",
+       "  #altair-viz-ca11fb793df247e3b6e041ac2264fa2b.vega-embed {\n",
        "    width: 100%;\n",
        "    display: flex;\n",
        "  }\n",
        "\n",
-       "  #altair-viz-467095e8a7e248c58e533ec34f0de232.vega-embed details,\n",
-       "  #altair-viz-467095e8a7e248c58e533ec34f0de232.vega-embed details summary {\n",
+       "  #altair-viz-ca11fb793df247e3b6e041ac2264fa2b.vega-embed details,\n",
+       "  #altair-viz-ca11fb793df247e3b6e041ac2264fa2b.vega-embed details summary {\n",
        "    position: relative;\n",
        "  }\n",
        "</style>\n",
-       "<div id=\"altair-viz-467095e8a7e248c58e533ec34f0de232\"></div>\n",
+       "<div id=\"altair-viz-ca11fb793df247e3b6e041ac2264fa2b\"></div>\n",
        "<script type=\"text/javascript\">\n",
        "  var VEGA_DEBUG = (typeof VEGA_DEBUG == \"undefined\") ? {} : VEGA_DEBUG;\n",
        "  (function(spec, embedOpt){\n",
        "    let outputDiv = document.currentScript.previousElementSibling;\n",
-       "    if (outputDiv.id !== \"altair-viz-467095e8a7e248c58e533ec34f0de232\") {\n",
-       "      outputDiv = document.getElementById(\"altair-viz-467095e8a7e248c58e533ec34f0de232\");\n",
+       "    if (outputDiv.id !== \"altair-viz-ca11fb793df247e3b6e041ac2264fa2b\") {\n",
+       "      outputDiv = document.getElementById(\"altair-viz-ca11fb793df247e3b6e041ac2264fa2b\");\n",
        "    }\n",
        "    const paths = {\n",
        "      \"vega\": \"https://cdn.jsdelivr.net/npm/vega@5?noext\",\n",
@@ -950,14 +950,14 @@
        "        .catch(showError)\n",
        "        .then(() => displayChart(vegaEmbed));\n",
        "    }\n",
-       "  })({\"config\": {\"view\": {\"continuousWidth\": 300, \"continuousHeight\": 300}, \"axis\": {\"labelFontSize\": 14, \"titleFontSize\": 14}, \"legend\": {\"labelFontSize\": 14, \"titleFontSize\": 11}}, \"layer\": [{\"mark\": {\"type\": \"line\"}, \"encoding\": {\"color\": {\"field\": \"Title\", \"legend\": null, \"scale\": {\"scheme\": \"greys\"}, \"type\": \"ordinal\"}, \"x\": {\"axis\": {\"labelAngle\": 0, \"labelExpr\": \"datum.value\"}, \"field\": \"Decade\", \"sort\": \"ascending\", \"title\": \"Decade\", \"type\": \"ordinal\"}, \"y\": {\"axis\": {\"format\": \"%\", \"labelAngle\": 0}, \"field\": \"Value\", \"title\": \"Percent of Documents\", \"type\": \"quantitative\"}}, \"title\": \"Frequency of title references in *Victorian Studies*\"}, {\"mark\": {\"type\": \"point\", \"filled\": true}, \"encoding\": {\"color\": {\"field\": \"Title\", \"scale\": {\"scheme\": \"greys\"}, \"type\": \"ordinal\"}, \"shape\": {\"field\": \"Title\", \"scale\": {\"range\": [\"circle\", \"cross\", \"triangle-right\", \"square\", \"diamond\"]}, \"type\": \"ordinal\"}, \"size\": {\"field\": \"Title\", \"legend\": null, \"scale\": {\"domain\": [\"Bleak House\", \"David Copperfield\", \"Middlemarch\", \"Great Expectations\"], \"range\": [200, 200]}, \"type\": \"ordinal\"}, \"x\": {\"axis\": {\"labelAngle\": 0, \"labelExpr\": \"datum.value\"}, \"field\": \"Decade\", \"sort\": \"ascending\", \"title\": \"Decade\", \"type\": \"ordinal\"}, \"y\": {\"axis\": {\"format\": \"%\", \"labelAngle\": 0}, \"field\": \"Value\", \"title\": \"Percent of Documents\", \"type\": \"quantitative\"}}, \"title\": \"Frequency of title references in *Victorian Studies*\"}], \"data\": {\"name\": \"data-4bfdbb105e794ca76ac3991635e55011\"}, \"resolve\": {\"scale\": {\"color\": \"independent\", \"shape\": \"independent\"}}, \"width\": 400, \"$schema\": \"https://vega.github.io/schema/vega-lite/v5.15.1.json\", \"datasets\": {\"data-4bfdbb105e794ca76ac3991635e55011\": [{\"Title\": \"Bleak House\", \"Decade\": \"1960s\", \"Value\": 0.042382588774341354}, {\"Title\": \"David Copperfield\", \"Decade\": \"1960s\", \"Value\": 0.032073310423825885}, {\"Title\": \"Great Expectations\", \"Decade\": \"1960s\", \"Value\": 0.03436426116838488}, {\"Title\": \"Middlemarch\", \"Decade\": \"1960s\", \"Value\": 0.058419243986254296}, {\"Title\": \"Bleak House\", \"Decade\": \"1970s\", \"Value\": 0.04875406283856989}, {\"Title\": \"David Copperfield\", \"Decade\": \"1970s\", \"Value\": 0.035752979414951244}, {\"Title\": \"Great Expectations\", \"Decade\": \"1970s\", \"Value\": 0.035752979414951244}, {\"Title\": \"Middlemarch\", \"Decade\": \"1970s\", \"Value\": 0.06500541711809317}, {\"Title\": \"Bleak House\", \"Decade\": \"1980s\", \"Value\": 0.04697986577181208}, {\"Title\": \"David Copperfield\", \"Decade\": \"1980s\", \"Value\": 0.05956375838926174}, {\"Title\": \"Great Expectations\", \"Decade\": \"1980s\", \"Value\": 0.031040268456375843}, {\"Title\": \"Middlemarch\", \"Decade\": \"1980s\", \"Value\": 0.0721476510067114}, {\"Title\": \"Bleak House\", \"Decade\": \"1990s\", \"Value\": 0.05007153075822604}, {\"Title\": \"David Copperfield\", \"Decade\": \"1990s\", \"Value\": 0.04220314735336195}, {\"Title\": \"Great Expectations\", \"Decade\": \"1990s\", \"Value\": 0.043633762517882695}, {\"Title\": \"Middlemarch\", \"Decade\": \"1990s\", \"Value\": 0.05865522174535051}, {\"Title\": \"Bleak House\", \"Decade\": \"2000s\", \"Value\": 0.053546592489568855}, {\"Title\": \"David Copperfield\", \"Decade\": \"2000s\", \"Value\": 0.02781641168289291}, {\"Title\": \"Great Expectations\", \"Decade\": \"2000s\", \"Value\": 0.03268428372739916}, {\"Title\": \"Middlemarch\", \"Decade\": \"2000s\", \"Value\": 0.056328233657858134}, {\"Title\": \"Bleak House\", \"Decade\": \"2010s\", \"Value\": 0.04825901038485034}, {\"Title\": \"David Copperfield\", \"Decade\": \"2010s\", \"Value\": 0.03359804520464264}, {\"Title\": \"Great Expectations\", \"Decade\": \"2010s\", \"Value\": 0.028711056811240074}, {\"Title\": \"Middlemarch\", \"Decade\": \"2010s\", \"Value\": 0.06536346976175932}]}}, {\"mode\": \"vega-lite\"});\n",
+       "  })({\"config\": {\"view\": {\"continuousWidth\": 300, \"continuousHeight\": 300}, \"axis\": {\"labelFontSize\": 14, \"titleFontSize\": 14}, \"legend\": {\"labelFontSize\": 14, \"titleFontSize\": 11}}, \"layer\": [{\"mark\": {\"type\": \"line\"}, \"encoding\": {\"color\": {\"field\": \"Title\", \"legend\": null, \"scale\": {\"scheme\": \"greys\"}, \"type\": \"ordinal\"}, \"x\": {\"axis\": {\"labelAngle\": 0, \"labelExpr\": \"datum.value\"}, \"field\": \"Decade\", \"sort\": \"ascending\", \"title\": \"Decade\", \"type\": \"ordinal\"}, \"y\": {\"axis\": {\"format\": \"%\", \"labelAngle\": 0}, \"field\": \"Percentage_of_Documents\", \"title\": \"Percent of Documents\", \"type\": \"quantitative\"}}, \"title\": \"Frequency of title references in *Victorian Studies*\"}, {\"mark\": {\"type\": \"point\", \"filled\": true}, \"encoding\": {\"color\": {\"field\": \"Title\", \"scale\": {\"scheme\": \"greys\"}, \"type\": \"ordinal\"}, \"shape\": {\"field\": \"Title\", \"scale\": {\"range\": [\"circle\", \"cross\", \"triangle-right\", \"square\", \"diamond\"]}, \"type\": \"ordinal\"}, \"size\": {\"field\": \"Title\", \"legend\": null, \"scale\": {\"domain\": [\"Bleak House\", \"David Copperfield\", \"Middlemarch\", \"Great Expectations\"], \"range\": [200, 200]}, \"type\": \"ordinal\"}, \"x\": {\"axis\": {\"labelAngle\": 0, \"labelExpr\": \"datum.value\"}, \"field\": \"Decade\", \"sort\": \"ascending\", \"title\": \"Decade\", \"type\": \"ordinal\"}, \"y\": {\"axis\": {\"format\": \"%\", \"labelAngle\": 0}, \"field\": \"Percentage_of_Documents\", \"title\": \"Percent of Documents\", \"type\": \"quantitative\"}}, \"title\": \"Frequency of title references in *Victorian Studies*\"}], \"data\": {\"name\": \"data-19de69868d166eb37800067473b8365f\"}, \"resolve\": {\"scale\": {\"color\": \"independent\", \"shape\": \"independent\"}}, \"width\": 400, \"$schema\": \"https://vega.github.io/schema/vega-lite/v5.15.1.json\", \"datasets\": {\"data-19de69868d166eb37800067473b8365f\": [{\"Title\": \"Bleak House\", \"Decade\": \"1960s\", \"Percentage_of_Documents\": 0.042382588774341354}, {\"Title\": \"David Copperfield\", \"Decade\": \"1960s\", \"Percentage_of_Documents\": 0.032073310423825885}, {\"Title\": \"Great Expectations\", \"Decade\": \"1960s\", \"Percentage_of_Documents\": 0.03436426116838488}, {\"Title\": \"Middlemarch\", \"Decade\": \"1960s\", \"Percentage_of_Documents\": 0.058419243986254296}, {\"Title\": \"Bleak House\", \"Decade\": \"1970s\", \"Percentage_of_Documents\": 0.04875406283856989}, {\"Title\": \"David Copperfield\", \"Decade\": \"1970s\", \"Percentage_of_Documents\": 0.035752979414951244}, {\"Title\": \"Great Expectations\", \"Decade\": \"1970s\", \"Percentage_of_Documents\": 0.035752979414951244}, {\"Title\": \"Middlemarch\", \"Decade\": \"1970s\", \"Percentage_of_Documents\": 0.06500541711809317}, {\"Title\": \"Bleak House\", \"Decade\": \"1980s\", \"Percentage_of_Documents\": 0.04697986577181208}, {\"Title\": \"David Copperfield\", \"Decade\": \"1980s\", \"Percentage_of_Documents\": 0.05956375838926174}, {\"Title\": \"Great Expectations\", \"Decade\": \"1980s\", \"Percentage_of_Documents\": 0.031040268456375843}, {\"Title\": \"Middlemarch\", \"Decade\": \"1980s\", \"Percentage_of_Documents\": 0.0721476510067114}, {\"Title\": \"Bleak House\", \"Decade\": \"1990s\", \"Percentage_of_Documents\": 0.05007153075822604}, {\"Title\": \"David Copperfield\", \"Decade\": \"1990s\", \"Percentage_of_Documents\": 0.04220314735336195}, {\"Title\": \"Great Expectations\", \"Decade\": \"1990s\", \"Percentage_of_Documents\": 0.043633762517882695}, {\"Title\": \"Middlemarch\", \"Decade\": \"1990s\", \"Percentage_of_Documents\": 0.05865522174535051}, {\"Title\": \"Bleak House\", \"Decade\": \"2000s\", \"Percentage_of_Documents\": 0.053546592489568855}, {\"Title\": \"David Copperfield\", \"Decade\": \"2000s\", \"Percentage_of_Documents\": 0.02781641168289291}, {\"Title\": \"Great Expectations\", \"Decade\": \"2000s\", \"Percentage_of_Documents\": 0.03268428372739916}, {\"Title\": \"Middlemarch\", \"Decade\": \"2000s\", \"Percentage_of_Documents\": 0.056328233657858134}, {\"Title\": \"Bleak House\", \"Decade\": \"2010s\", \"Percentage_of_Documents\": 0.04825901038485034}, {\"Title\": \"David Copperfield\", \"Decade\": \"2010s\", \"Percentage_of_Documents\": 0.03359804520464264}, {\"Title\": \"Great Expectations\", \"Decade\": \"2010s\", \"Percentage_of_Documents\": 0.028711056811240074}, {\"Title\": \"Middlemarch\", \"Decade\": \"2010s\", \"Percentage_of_Documents\": 0.06536346976175932}]}}, {\"mode\": \"vega-lite\"});\n",
        "</script>"
       ],
       "text/plain": [
        "alt.LayerChart(...)"
       ]
      },
-     "execution_count": 16,
+     "execution_count": 20,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -968,14 +968,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 17,
+   "execution_count": 21,
    "metadata": {},
    "outputs": [],
    "source": [
     "line = alt.Chart(vs_titles_df, title=\"Frequency of title references in *Victorian Studies*\").mark_line().encode(\n",
     "    x=alt.X('Decade', title=\"Decade\",type='ordinal', sort='ascending', \n",
     "                                                            axis=alt.Axis(labelAngle=0, labelExpr='datum.value')), \n",
-    "    y=alt.Y('Value:Q', title=\"Percent of Documents\", axis=alt.Axis(labelAngle=0, format=\"%\")),\n",
+    "    y=alt.Y('Percentage_of_Documents:Q', title=\"Percent of Documents\", axis=alt.Axis(labelAngle=0, format=\"%\")),\n",
     "    color=alt.Color('Title:O', scale=alt.Scale(scheme='category20'),legend=None),\n",
     ")\n",
     "\n",
@@ -1009,7 +1009,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 18,
+   "execution_count": 22,
    "metadata": {},
    "outputs": [
     {
@@ -1017,23 +1017,23 @@
       "text/html": [
        "\n",
        "<style>\n",
-       "  #altair-viz-470bf46be83449a1a031b6bd8b2b6276.vega-embed {\n",
+       "  #altair-viz-af7f01513d00409a8ad86bb771527f77.vega-embed {\n",
        "    width: 100%;\n",
        "    display: flex;\n",
        "  }\n",
        "\n",
-       "  #altair-viz-470bf46be83449a1a031b6bd8b2b6276.vega-embed details,\n",
-       "  #altair-viz-470bf46be83449a1a031b6bd8b2b6276.vega-embed details summary {\n",
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@@ -19626,7 +19626,19 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## Figures for \"What We Quote: Disciplinary History and the Textual Atmospheres of *Middlemarch*\" essay"
+    "## Figures for \"What We Quote: Disciplinary History and the Textual Atmospheres of *Middlemarch*\" essay\n",
+    "\n",
+    "Visualizations draw on the following datasets:\n",
+    "\n",
+    "+ *Victorian Studies* author and title data:\n",
+    "    + [https://github.com/lit-mod-viz/middlemarch-critical-histories/blob/master/data/VS-author-term_frequencies.csv](https://github.com/lit-mod-viz/middlemarch-critical-histories/blob/master/data/VS-author-term_frequencies.csv)\n",
+    "    + [https://github.com/lit-mod-viz/middlemarch-critical-histories/blob/master/data/VS-title-term_frequencies.csv](https://github.com/lit-mod-viz/middlemarch-critical-histories/blob/master/data/VS-title-term_frequencies.csv)\n",
+    "+ Text-matcher dataset:\n",
+    "    + [https://github.com/lit-mod-viz/middlemarch-critical-histories/blob/master/data/t2-c3-n2-m3-no-stops.json](https://github.com/lit-mod-viz/middlemarch-critical-histories/blob/master/data/t2-c3-n2-m3-no-stops.json)\n",
+    "    + [https://github.com/lit-mod-viz/middlemarch-critical-histories/blob/master/data/matches.csv](https://github.com/lit-mod-viz/middlemarch-critical-histories/blob/master/data/matches.csv)\n",
+    "+ List of journals classified Victorianist:\n",
+    "    + [https://github.com/lit-mod-viz/middlemarch-critical-histories/blob/master/data/list-of-Victorianist-journals.csv](https://github.com/lit-mod-viz/middlemarch-critical-histories/blob/master/data/list-of-Victorianist-journals.csv)\n",
+    "    "
    ]
   },
   {
@@ -19635,7 +19647,7 @@
    "source": [
     "### Figure 1\n",
     "#### Frequency of author references in *Victorian Studies*\n",
-    "See link to [Figure 1 in notebook](#Most-frequent-author-references-in-Victorian-Studies,-line-chart) for more context. [Color version](#Most-frequent-author-references-in-Victorian-Studies,-line-chart-(color))."
+    "See link to [Figure 1 context](#Most-frequent-author-references-in-Victorian-Studies,-line-chart) and [data](#Most-frequent-author-references-in-Victorian-Studies) for more details. [Color version of Figure 1](#Most-frequent-author-references-in-Victorian-Studies,-line-chart-(color))."
    ]
   },
   {
@@ -19732,7 +19744,7 @@
    "source": [
     "### Figure 2\n",
     "#### Frequency of novel title references in *Victorian Studies*\n",
-    "See link to [Figure 2 in notebook](#Most-frequent-title-references-in-Victorian-Studies,-line-chart) for more context. [Color version](#Most-frequent-title-references-in-Victorian-Studies,-line-chart-(color))"
+    "See link to [Figure 2 context](#Most-frequent-title-references-in-Victorian-Studies,-line-chart) and [data](#Most-frequent-title-references-in-Victorian-Studies) for more details. [Color version of Figure 2](#Most-frequent-title-references-in-Victorian-Studies,-line-chart-(color))"
    ]
   },
   {
@@ -19830,7 +19842,7 @@
     "### Figure 3\n",
     "#### *Middlemarch* quotations by chapter\n",
     "\n",
-    "See link to [Figure 3 in notebook](#Number-of-quotations,-by-chapter-in-Middlemarch,-bar-chart) for more context"
+    "See link to [Figure 3 context](#Number-of-quotations,-by-chapter-in-Middlemarch,-bar-chart) and [data](#Number-of-quotations,-by-chapter-in-Middlemarch) for more details."
    ]
   },
   {
@@ -19928,7 +19940,7 @@
     "### Figure 4\n",
     "#### Rank-frequency distribution of quotations from *Middlemarch* by chapter.\n",
     "\n",
-    "The ten most frequently quoted chapters, starting from the far left of the graph, are 20, 15, 1, 87 [Finale], 0 [Prelude], 3, 19, 10, 81, and 2. See link to [Figure 4 in notebook](#Number-of-quotations,-by-chapter-in-Middlemarch,-bar-chart-(ranked-by-frequency)) for more context"
+    "The ten most frequently quoted chapters, starting from the far left of the graph, are 20, 15, 1, 87 [Finale], 0 [Prelude], 3, 19, 10, 81, and 2. See link to [Figure 4 context](#Number-of-quotations,-by-chapter-in-Middlemarch,-bar-chart-(ranked-by-frequency)) and [data](#Number-of-quotations,-by-chapter-in-Middlemarch) for more details."
    ]
   },
   {
@@ -20025,7 +20037,7 @@
    "source": [
     "### Figure 5\n",
     "#### *Middlemarch* quotations by chapter (normalized), diachronic heatmap\n",
-    "See link to [Figure 5 in notebook](#Middlemarch-quotations-per-chapter,-per-decade-(normalized-and-weighted),-heat-map) for more context"
+    "See link to [Figure 5 context](#Middlemarch-quotations-per-chapter,-per-decade-(normalized-and-weighted),-heat-map) and [data](#Number-of-quotations-per-chapter,-per-decade-(normalized-by-decade-and-weighted-by-word-count)) for more details."
    ]
   },
   {
@@ -20125,7 +20137,7 @@
     "\n",
     "Note: Chapter 0 and 87 refer to the Prelude and Finale, respectively. Chapters not among the top five are represented in light-gray.\n",
     "\n",
-    "See link to [Figure 6 in notebook](#Middlemarch-top-5-most-frequently-quoted-chapters,-line-chart) for more context. [Color version](#Middlemarch-top-5-most-frequently-quoted-chapters,-line-chart-(color))."
+    "See link to [Figure 6 context](#Middlemarch-top-5-most-frequently-quoted-chapters,-line-chart) and [data](#Number-of-quotations-per-chapter,-per-decade-(not-normalized-or-weighted)) for more details. [Color version of Figure 6](#Middlemarch-top-5-most-frequently-quoted-chapters,-line-chart-(color))."
    ]
   },
   {
@@ -20225,7 +20237,7 @@
     "\n",
     "For a complete list of journals classified as \"Victorianist\", see: [Statistics on Victorianist journals in the dataset](#Statistics-on-Victorianist-journals-in-the-dataset).\n",
     "\n",
-    "See link to [Figure 7 in notebook](#Victorianist-journals:-Middlemarch-quotations-per-chapter,-per-decade-(normalized-and-weighted),-heat-map) for more context.\n",
+    "See link to [Figure 7 context](#Victorianist-journals:-Middlemarch-quotations-per-chapter,-per-decade-(normalized-and-weighted),-heat-map) and [data](#Victorianist-journals:-Middlemarch-quotations-per-chapter,-per-decade-(normalized-by-decade-and-weighted-by-word-count)) for more details.\n",
     "\n"
    ]
   },