Production. Pratt and Whitney airplane engines. Crankshafts lined up f...
Public domain photograph of manufacturing, industry, free to use, no copyright restrictions image - Picryl description
Production. Airplane maufacture, general. Why our warplanes hold toget...
Picryl description: Public domain image of a bomber aircraft, military aviation, air forces, free to use, no copyright restrictions.
Production. BT-13A ("Valiant") basic trainers. A girl worker at Vultee...
Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description
Production. Airplane propellers. Propeller blades that will soon be dr...
Public domain photograph of manufacturing, industry, free to use, no copyright restrictions image - Picryl description
Production. BT-13A ("Valiant") basic trainers. An aged woodworker uses...
Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description
Production. Airplane propellers. Arthur Voss performs final blade bala...
Picryl description: Public domain photograph of a worker, construction, carpenter, 1930s, free to use, no copyright restrictions.
Production. Airplane propellers. John Sonesen, propeller blade grinder...
Picryl description: Public domain image of a factory, plant, manufacture, assembly line, industrial facility, early 20th-century industrial architecture, free to use, no copyright restrictions.
Production. C-47 transport planes. Close spacing on the Douglas assemb...
Public domain photograph of 1930s-1940s US industrial development, Second World War, US war production, indusry, no copyright restrictions image - Picryl description
Production. Airplane maufacture, general. Clerical jobs along the asse...
Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description