diff --git a/_layouts/doc_page.html b/_layouts/doc_page.html
index e0a5eb8..596f083 100644
--- a/_layouts/doc_page.html
+++ b/_layouts/doc_page.html
@@ -18,6 +18,9 @@
         <a href="/api/hive/snapshot/apidocs/index.html">Hive</a>,
         <a href="/api/misc/snapshot/apidocs/index.html">Misc</a>
       </h4>
+      <h4>Table Of Contents:
+         <a href="/docs/toc.html">ToC</a>
+      </h4>
     </div>
   </div>
 
diff --git a/docs/toc.md b/docs/toc.md
index 0261d54..432b77b 100644
--- a/docs/toc.md
+++ b/docs/toc.md
@@ -52,9 +52,13 @@
   <li><a href="{{site.docs_dir}}/Quantiles/QuantilesJavaExample.html">Quantiles Sketch Java Example</a></li>
   <li><a href="{{site.docs_dir}}/Quantiles/QuantilesPigUDFs.html">Quantiles Sketch Pig UDFs</a></li>
   <li><a href="{{site.docs_dir}}/Quantiles/QuantilesHiveUDFs.html">Quantiles Sketch Hive UDFs</a></li>
-  <li><a href="{{site.docs_dir}}/Quantiles/KLLSketch.html">New KLL sketch and comparison with DoublesSketch</a></li>
-  <li><a href="{{site.docs_dir}}/Quantiles/KllSketchVsTDigest.html">KLL sketch vs t-digest</a></li>
-  <li><a href="{{site.docs_dir}}/Quantiles/DruidApproxHistogramStudy.html">Druid Approximate Histogram Study</a></li>
+
+  <h3><a data-toggle="collapse" class="menu collapsed" href "#collapse_quantilesStudies">Quantiles Studies</a></h3>
+  <div class="collapse" id="collapse_quantilesStudies">
+    <li><a href="{{site.docs_dir}}/Quantiles/KLLSketch.html">New KLL sketch and comparison with DoublesSketch</a></li>
+    <li><a href="{{site.docs_dir}}/Quantiles/KllSketchVsTDigest.html">KLL sketch vs t-digest</a></li>
+    <li><a href="{{site.docs_dir}}/Quantiles/DruidApproxHistogramStudy.html">Druid Approximate Histogram Study</a></li>
+  </div>
 
   <h3><a data-toggle="collapse" class="menu collapsed" href="#collapse_quantilesTheory">Quantiles Sketch Theory</a></h3>
   <div class="collapse" id="collapse_quantilesTheory">