diff --git a/free-programming-books.md b/free-programming-books.md
index 6cb6a260734818ea119a9b4e4692f052c190d011..3853b08b5dc93615ff80ef6deb7490d9ed668811 100644
--- a/free-programming-books.md
+++ b/free-programming-books.md
@@ -340,6 +340,7 @@
 * [Mathematics for Computer Science (November 2013 Version)](http://courses.csail.mit.edu/6.042/fall13/mcs.pdf) (PDF) - Eric Lehman
 * [Number Theory](http://web.mit.edu/~holden1/www/math/number-theory.pdf) (PDF)
 * [OpenIntro Statistics](http://www.openintro.org/stat/textbook.php)
+* [Power Programming with Mathematica](http://mathematica.stackexchange.com/questions/16485/are-you-interested-in-purchasing-david-wagners-power-programming-with-mathemat/22724#22724) - David B. Wagner
 * [Probability and Statistics Cookbook](http://matthias.vallentin.net/probability-and-statistics-cookbook/)
 * [Probability and Statistics EBook](http://wiki.stat.ucla.edu/socr/index.php/Probability_and_statistics_EBook)
 * [Statistics Done Wrong](http://www.refsmmat.com/statistics/) - Alex Reinhart