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| Date: | 04 12 1928 |
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| Description: | Man measuring chemical CaCO4 on Toledo Scale in Ricketts laboratory at Agriculture Chemistry Building, University of Wisconsin. |
| Date: | 04 12 1928 |
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| Description: | Man taking chemical CaCO4 out of a jar to measure it on Toledo Scale in Ricketts laboratory at Agriculture Chemistry Building, University of Wisconsin. |
| Date: | 02 28 1928 |
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| Description: | Interior of the Peter F. Smyth Grocery Store, located at 1202 West Dayton Street. |
| Date: | 02 28 1928 |
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| Description: | Oscar Mayer plant interior with Toledo Scale. |
| Date: | 03 16 1927 |
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| Description: | Engineering photograph of men field testing an experimental cotton picker pulled by a Farmall tractor. |
| Date: | 06 12 1917 |
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| Description: | Engineering photograph of a man field testing a limited production motor cultivator. Original caption reads: "... the 1916 motor cultivator with the additi... |
| Date: | 1950 |
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| Description: | A man sets up a cone-shaped instrument designed to distill fresh water from salt water as he leans out of a small motor boat on the water. |
| Date: | 1950 |
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| Description: | Holding a dropper over racks of test tubes, a man in a lab coat aims to place drops in the receptacles. |
| Date: | 1919 |
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| Description: | Man operating an experimental McCormick motor-driven grain binder in a field. |
| Date: | 1921 |
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| Description: | Man operating an experimental(?) reverse drive tractor with mounted hay rake in a field. |
| Date: | 1979 |
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| Description: | Color poster printed to honor the 60th anniversary of Alfred Lawson's flight from Milwaukee to Washington, D.C. The poster includes a portrait of Lawson a... |
| Date: | 1900 |
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| Description: | Cadavers are laid out on gurneys in a sky-lit anatomy lab at Rush Medical College. |
| Date: | 1948 |
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| Description: | Worker checking dimensions and weight of Farmall Cub pistons at International Harvester's Louisville Works. |
| Date: | |
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| Description: | A man dressed in a football uniform demonstrates the art of drop-kicking the football. This is one of several demonstrations of strobe light functions at ... |
| Date: | |
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| Description: | "Doc" Edgerton adjusts equipment in the lab. Known for his pioneering work in the development of the electronic flash, his photograph of a splashing milk-d... |
| Date: | 05 14 1927 |
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| Description: | Farmer and mechanic F.L. Zybach, 32, standing beside his invention -- a Fordson tractor with a front-mounted plow equipped for "driverless operation." Orig... |
| Date: | 05 25 1954 |
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| Description: | Man standing next to an experimental four wheel rubber tire tractor inside an International Harvester engineering(?) facility. |
| Date: | 1947 |
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| Description: | Engineering photograph of a man sitting on an experimental International MRS Special tractor. |
| Date: | 1850 |
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| Description: | Quarter-length portrait of inventor Obed Hussey (1782?-1860) as it appeared in W.T. Hutchinson's biography of Cyrus Hall McCormick. He is wearing an eye pa... |
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