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: | 1959 |
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Description: | Man operating a high speed motion picture camera. Caption reads: "Operating range from 500 to 8000 pictures per second. Using standard 16 mm film." |
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