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| Date: | 1929 |
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| Description: | Re-enactors demonstrating a replica of the first reaper built by Cyrus Hall McCormick in 1831. The man raking at the back of the reaper appears to be playi... |
| Date: | 07 31 1941 |
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| Description: | People gathered around a Farmall Regular tractor on the farm of Clarence L. Dauberman. Original caption reads: "Sydney G. McAllister, chairman, executive c... |
| Date: | 1899 |
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| Description: | Three-quarter left side view of a tractor built by S.S. Morton. The photograph is labeled, "The Predecessor of the International Line." |
| Date: | 1863 |
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| Description: | Sketch of John Muir's clock design.The built clock was a combination of scythes, wheels and arrows. A rough bough of burr oak was set upon a base incrusted... |
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