diff --git a/free-programming-books.md b/free-programming-books.md
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--- a/free-programming-books.md
+++ b/free-programming-books.md
@@ -761,6 +761,7 @@ Kerridge (PDF) (email address *requested*, not required)
 * [Semantics with Applications: A Formal Introduction](http://www.daimi.au.dk/~bra8130/Wiley_book/wiley.html) - Hanne Riis Nielson, Flemming Nielson
 * [Structure and Interpretation of Computer Programs](https://mitpress.mit.edu/sicp/)
 * [Structure and Interpretation of Computer Programs](http://sarabander.github.io/sicp/html/index.xhtml)
+* [The Black Art of Programming](http://self.gutenberg.org/wplbn0002828847-the-black-art-of-programming-by-mcilroy-mark.aspx?) - Mark McIlroy
 * [Think Complexity](http://www.greenteapress.com/compmod/) - Allen B. Downey