Books about Jeffrey

Jeffrey’s investigations have been featured in several books, including:

Convictions, by John Kroger

The Dark Art, by Edward Follis

The Last Cowboy, by Timothy Sellers

Seeds of Terror, by Gretchen Peters

Careers in Undercover Narcotics Investigations, by Linda Bickerstaff

U.S. Department of Justice Drug Enforcement Administration A Tradition of Excellence, 1973-2013, published by DEA.