This book is an in-depth study covering John K. "Jack" Northrop's quest for a clean flying machine. Covered are: Northrop's initial N-1M project, the N-9M, XP-56, through the B-35 project, B-49 project, and the huge bombers planned only on the drawing board. Included are over 300 black and white and color photographs, as well as drawings and statistical data on all of the Northrop flying wing and tailless aircraft.