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Filter: Categories of Wisconsin Historical Images
Filter: Subject of Work
Filter: Subject of petroleum industry and trade
Filter: Subject of machinery
| Date: | 11 10 1937 |
|---|---|
| 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... |
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