YB-17 bombardment squadron, Langley Field, Virginia. More fuel-storage...
Picryl description: Public domain image of a bomber aircraft, military aviation, air forces, free to use, no copyright restrictions.
Steel manufacture, Allegheny-Ludlum. The production of many tons of hi...
Picryl description: Public domain image of a worker, labor, factory, plant, manufacture, industrial facility, 1930s, mid-20th-century industrial photo, free to use, no copyright restrictions.
Giving defense a lift. A mighty crane installs one of the big machines...
Picryl description: Public domain image of an aircraft, assembly line, industrial facility, 1930s aviation, free to use, no copyright restrictions.
Steel manufacture, Allegheny-Ludlum. The production of many tons of hi...
Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description
Army truck manufacture (Dodge). An expert installs the accessories for...
Picryl description: Public domain photograph of a machine, industrial equipment, engine, generator, free to use, no copyright restrictions.
Production. BT-13A ("Valiant") basic trainers. A midget hard at work i...
Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description
Defense housing, Erie, Pennsylvania. A workman installs a forced-air h...
Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description
Production. B-24 bombers and C-87 transports. Geneva Grishan installs ...
Picryl description: Public domain image of a bomber aircraft, military aviation, air forces, free to use, no copyright restrictions.