diff --git a/index.md b/index.md
index c078f01..52d821f 100644
--- a/index.md
+++ b/index.md
@@ -77,6 +77,14 @@ Norber Wiener, _Cybernetics_
 
 ----
 
+Claude Shannon, _A symbolic analysis of relay and switching circuits_
+
+![](/img/shannon.png)
+
+-- [Claude Shannon, _A symbolic analysis of relay and switching circuits_, MIT M.Sc Thesis](http://dspace.mit.edu/handle/1721.1/11173)
+
+
+