Four Dragon Door Publications by calisthenics authors Paul Wade, and the Kalevala brothers Danny and Al. In very good condition, See pictures. If you know these books you know who these guys are. Convict Conditioning 1 Paul Wade- $30 Convict conditioning 2 Paul Wade -$30 Raising the bar Al Kavadlo - $25 Diamond cut abs Danny Kavadlo - $25 The last book is Complete Calisthenics by Ashley Kalimantan- $10 All books for $100