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| Date: | 1955 |
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| Description: | Elevated view from shoreline of the "Monona-Mobile" (pontoon boat) which is powered by an automobile. There is a man standing on a pier on the left watchin... |
| Date: | 06 1914 |
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| Description: | The Aerodome, invented by Samuel Langley, Secretary of the Smithsonian Institution, as reconstructed by Glenn Curtiss at Hammondsport. |
| Date: | 1863 |
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| Description: | A sketch of a thermometer. Quoting from Muir's autobiography "My Boyhood and Youth" he described the thermometer as "made of an iron rod, about three feet ... |
| Date: | 1899 |
|---|---|
| Description: | Three-quarter left side view of a tractor built by S.S. Morton. The photograph is labeled, "The Predecessor of the International Line." |
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