3 media by topic ∙ page 1 of 1
Airplanes - Struts - Strength test of aeroplane struts. Forest Product...
Photographer: Forest Products Lab., Madison Airplanes - Struts Public domain photograph related to the United States in World War One, free to use, no copyright restrictions image - Picryl description
Airplanes - Wheels - Diagram showing strength test of wheel. From Acke...
Photographer: Ackerman Wheel Co. Cleveland, Ohio Airplanes - Wheels Public domain scan of aircraft design drawing, technical diagram, free to use, no copyright restrictions image - Picryl description
Airplanes - Wings - Strength test of aeroplane wing beams. Forest Prod...
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