File:America's Highways 1776–1976 - page 453.jpg
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Summary
| Description |
English: The 1930’s witnessed an important advance—the introduction of the diesel engine on tractors. This diesel-powered tractor teamed with a 5-cubic yard capacity scraper moved approximately 16,000 yards of earth in 14 days. |
| Date | |
| Source | https://en.wikisource.org/wiki/Page:America%27s_Highways_1776%E2%80%931976.djvu/459 |
| Author | Federal Highway Administration |
Licensing
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This image is a work of a United States Department of Transportation employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain. | 
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 10:39, 30 January 2023 | | 2,177 × 1,291 (1.93 MB) | Sp1nd01 | Uploaded a work by Federal Highway Administration from https://en.wikisource.org/wiki/Page:America%27s_Highways_1776%E2%80%931976.djvu/459 with UploadWizard |
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