Airplanes - Wings - Design and tests of aeroplane wing ribs. Forest Products Laboratory, Madison, Wis
Summary
Photographer: Forest Products Lab., Madison
Airplanes - Wings
Public domain photograph related to the United States in World War One, 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