Pi Day Books.
- Life of Pi by Yann Martel (May 1, 2003)
- A History of Pi by Petr Beckmann (Jul 15, 1976)
- Pi: A Source Book by J.L. Berggren, Jonathan M. Borwein and Peter Borwein (Jun 17, 2004)
- Pi: A Biography of the World’s Most Mysterious Number by Alfred S. Posamentier (Aug 31, 2004)