Aero Digest Magazine October 1937 Third Annual Digest Airline Equipment

Aero Digest Magazine December 1937 Aviation Curtiss P-36A Army Air Corps

Aero Digest Magazine July 1937 Third Annual Digest Aircraft Pratt & Whitney

AERO DIGEST Magazine April 1937 Aeronautical Digest Publishing Corp., NY

Aero Digest Magazine January 1937 2nd Annual Aircraft Engine Machinery

Aero Digest Magazine January 1934 Aviation Engineering Fairchild

Aero Digest Magazine February 1934 Aviation Engineering Pratt & Whitney

Aero Digest Magazine October 15 1944 Aviation Engineering