From e8ebed07ec6b2f38952071c61406032f68aadc08 Mon Sep 17 00:00:00 2001
From: Johan <johand@openmailbox.org>
Date: Fri, 1 Nov 2013 16:32:51 -0430
Subject: [PATCH] Casting Spels in Lisp

---
 free-programming-books.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/free-programming-books.md b/free-programming-books.md
index dab6560b..0d006f0e 100644
--- a/free-programming-books.md
+++ b/free-programming-books.md
@@ -716,6 +716,7 @@ See also [TeX](#tex)
 * [Successful Lisp: How to Understand and Use Common Lisp](http://psg.com/~dlamkins/sl/) - David Lamkins
 * [Sketchy LISP](http://www.bcl.hamilton.ie/~nmh/t3x.org/zzz/) - Nils Holm
 * [Lisp Koans](https://github.com/google/lisp-koans)
+* [Casting Spels in Lisp](http://www.lisperati.com/casting.html)
 
 
 ###Lua