Unbound (loose pages), hand typed.
"Superfortress school."
"5 October 1945, the date of deactivation."
Include bibliography and section titled: Supporting Documents.
Date for this item was determined by a Dahlberg research volunteer to be 1918. His source was "Mavericks of the Sky: the first daring pilots of the U.S. Air Mail" by Barry Rosenberg, and Catherine Macaulay. Notes on top of page 282.