Using A Two-Horn Listening Device At Bolling Field In Washington, D.C, In 1921 Before The Invention Of Radar, To Listen For Distant Aircraft.
The Hindenburg Takes Shape, 1932.
Kodak K-24 Camera, Used For Aerial Photography During WW2 By The Americans.
The first photo would make an interesting scratch build except you’d be forever explaining it unless you incorporated the photo into the base 
Light bulb moment…isn’t there a ‘build a photo’ campaign going no presently??
Cheers,
C.
I’m loving the Hindenburg picture, the health and safety brigade would be having convolutions over those guys at the top of the ladders.
