Every knock a boost. A little careful hammer work pushes a big gun alo...
Picryl description: Public domain image of an industrial building, factory, workshop, workers, 19th-20th century, free to use, no copyright restrictions.
On the "assembly" line. Scores of parts go into Uncle Sam's big guns. ...
Public domain photograph of New York in 1930s, free to use, no copyright restrictions image - Picryl description
The man behind the gun. Worker in an eastern arsenal finishing up the ...
Public domain photograph of New York in 1930s, free to use, no copyright restrictions image - Picryl description
No margin for error here. Micrometer readings are taken to make sure t...
Public domain photograph of New York in 1930s, free to use, no copyright restrictions image - Picryl description
Where there's smoke... A worker in an eastern arsenal turns the thread...
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.
Making accuracy certain. Rifling grooves to speed shells on their way ...
Public domain photograph of New York in 1930s, free to use, no copyright restrictions image - Picryl description
Equipment for a grim game. Medium-caliber guns roll in a growing strea...
Public domain photograph of organ, keyboard instrument, church, gothic architecture, free to use, no copyright restrictions image - Picryl description
Heavy hardware. Building the slide seats for medium-caliber guns being...
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.