The Aerospace Encyclopedia of Air Warfare (Volume One

The illustrated encyclopedia of weapons of World War I

The Rise and Fall of the Third Reich, an Illustrated History, Germany's Victories and Defeat 1939-1945

The Encyclopedia of 20th Century Air Warfare

Campaigns of World War II day by day

Hitler's foreign divisions

The Encyclopedia of Weapons of WWII

German Infantry in World War II

Allied Bombers 1939-1945

Allied Fighters 1939-1945 (The Essential Aircraft Identification Guide)

Sikorsky UH-60 Black Hawk