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Filter: Subject of signs and symbols
Filter: Subject of engines
Filter: Subject of machinery
| Date: | 11 1935 |
|---|---|
| Description: | Branch service managers inspect TracTracTor (crawler tractor) assembly at Tractor Works (factory). Original caption reads: "Tractor Works, Branch service m... |
| Date: | 11 10 1937 |
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| Description: | Two men work at an oil well site powered by an International Model P-30 power unit mounted on a truck. |
| Date: | 1937 |
|---|---|
| Description: | Two men wearing white hats stand near a drilling rig on which two International PA-50 power units are compounded. The machine on the right has a sign readi... |
| Date: | 07 25 1927 |
|---|---|
| Description: | Men are working below street level in the foreground, standing on either side of a pipe. Another man is standing in the street behind an engine powering to... |
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