Ian Caldwell | Bookhype

Ian Caldwell is the bestselling co-author of The Rule of Four. He lives in Virginia with his wife and children.

Feb 17, 2015

Cover of The Fifth Gospel

The Fifth Gospel

Nov 1, 2008

Cover of Pathways for Sustainable Sanitation

Pathways for Sustainable Sanitation

May 11, 2004

Cover of El Enigma del Cuatro

El Enigma del Cuatro

Jan 1, 2001

Cover of Sumatra

Jan 1, 2001

Cover of Sumatra 2nd Ed (Indonesian Guides)

Sumatra 2nd Ed (Indonesian Guides)

Jan 1, 1999

Cover of The Rule of Four

The Rule of Four