
ISBN: 1935881108
on January 1st 1970
Len's Summary: Night bombers over the Western Front.
German Armored Warplanes: A Centennial Perspective on Great War Airplanes

ISBN: 1935881116
on January 1st 1970
Len's Summary: Wood and canvas gave way to aluminum and steel airframe construction as aircraft were increasingly employed in a ground-support role.