diff --git a/SNARKs.md b/SNARKs.md
index c9b8ce5..a23dbcb 100644
--- a/SNARKs.md
+++ b/SNARKs.md
@@ -76,7 +76,11 @@ says this is analogous to the big Craig Gentry paper on
 fully-homomorphic encryption, but for SNARKs. He says it's good to
 use to gauge your understanding by flipping back to this one.
 
-### History
+### Justin Thaler's survey post
+
+<http://mybiasedcoin.blogspot.com/2013/09/guest-post-by-justin-thaler-mini-survey.html>
+
+### History of provable complexity-classes
 
 <http://courses.cs.washington.edu/courses/cse533/05au/pcp-history.pdf>