The United States Airforce: A Turbulent History 1907-1975 by Herbert Molloy Mason, Jr., a former U.S. Marine during WWII and later aviation editor for a magazine, is an aviation military history, free for a limited time courtesy of publisher Endeavour Press.
This was originally published in 1976 by Mason/Charter Publications.
The book covers the emergence of the use of aviation for military purposes by the U.S., from Orville Wright’s failed demonstration for the Army to early training at the beginning of the 20th century to the rise in prominence during the two World Wars and beyond, drawing upon the recountings of engineers, pilots, and decision-makers throughout the decades.
Offered worldwide, available at Amazon.