Mike Holt's Illustrated Guide to Understanding the NEC Volume 2 2008 Edtion
National Electrical Code 2008
Mike Holt's Illustrated Guide to Electrical NEC Exam Preparation
Mike Holt's Illustrated Guide to Understanding the National Electrical Code, based on the 2005 NEC - Volume 1 w/Answer Key
Workbook to Accompany Understanding the NEC Volume 1 Based on the 2008 NEC