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| Date: | 09 20 1956 |
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| Description: | Katharine Mather of the Corps of Engineers Waterways Experiment Station checks a computer analysis of the composition of cement. |
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| Description: | Students and teacher in classroom demonstrating an experiment with atomic energy. |
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| Description: | Elevated view of a demonstration of a nuclear reactor driven energy plant. |
| Date: | 1919 |
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| Description: | Inventor, B.L. Boboroff, displays his vote recording device to members of the U.S. House of Representatives. |
| Date: | 1969 |
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| Description: | Color photograph of an engineer attaching a Transtar nameplate to an International semi-truck during testing. |
| Date: | 06 23 1933 |
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| Description: | U.S. Forest Products engineer, George W. Trayer, in the laboratory with a plywood panel, newly developed to provide strength and durability in construction... |
| Date: | 07 30 1929 |
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| Description: | A man reads a Toledo scale at the University of Wisconsin engineering building. |
| Date: | 07 30 1929 |
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| Description: | A man reading a scale at the University of Wisconsin engineering building. |
| 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: | 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: | 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: | 1938 |
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| Description: | Man plowing a field with an experimental Farmall F-22 tractor. |
| Date: | |
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| Description: | A man sitting behind the wheel of an experimental tractor. |
| Date: | 1944 |
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| Description: | Arnold Batson works with natural and synthetic rubbers in the rubber laboratory at the Gas Power Engineering Department. The original caption reads: "Exper... |
| Date: | 1944 |
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| Description: | William Koppa uses a microscope to examine a specimen of steel. The original caption reads: "Micro-photography is employed at International Harvester's Gas... |
| Date: | 1925 |
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| Description: | Photographic illustration of two men cutting wood with a saw powered by horses on a treadmill. The horses and treadmill were added by an artist's drawing. |
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