Aerial photography. (open access)

Aerial photography.

A training manual designed to teach aerial photography for military purposes.
Date: July 8, 1941
Creator: United States. War Department.
System: The UNT Digital Library
Maintenance policies, publications, and forms. (open access)

Maintenance policies, publications, and forms.

Designed to familiarize Army Air Forces personnel with publications, forms, and policies, in order to ensure efficient aircraft maintenance and standardized practices.
Date: June 8, 1942
Creator: United States. War Department.
System: The UNT Digital Library