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Airplanes - Wings - Cross sections of wing beams. Aeroplane construction, Forest Products Laboratory, Madison, Wis
Summary
Photographer: Forest Products Lab., Wis.
Airplanes - Wings
Public domain photograph of building plan, architecture design drawing, free to use, no copyright restrictions image - Picryl description
Tags
Date
1917 - 1918
Source
The U.S. National Archives
Copyright info
No known copyright restrictions
