The B-24 Liberator was built in greater numbers than any other US WWII aircraft and served in every theatre of the war - as heavy bomber, anti-submarine aircraft, reconnaissance and transport. Produced in several factories, there were many variations and the existing literature is confusing and inaccurate. This book describes the development of nose-turreted versions of the B-24 as used by the USAAF, including the field modifications of the early variants through to the many production variants built by Consolidated, Ford and others, up to the definitive single-tailed B-24N. All aspects of the airframe are covered, from nose to tail, and the bewildering variety of turrets, guns, windows and other details are described and illustrated. Much of this information has never been published before, and much that has been published is incomplete.