Date: | 1939 |
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Description: | Elevated view of men harvesting grain with a McCormick-Deering 12 foot experimental combine (harvester-thresher) pulled by a Farmall M tractor. There is a ... |
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Description: | Unidentified explorer standing in field of snow with the Horlick Mountains of Antarctica in the background. The Horlick Mountains were named by Admiral Ric... |
Date: | 02 1977 |
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Description: | A man is kneeling on the ice and snow at Potter's Lake. He is running a machine that is testing the oxygen levels in the water, while recording the results... |
Date: | |
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Description: | A man is looking through a window towards another man in a cold lab testing a truck. Caption reads: "A parka-clad engineer braves thirty below zero tempera... |
Date: | |
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Description: | Dr. Edward Birge (left) and Chancey Juday (center) do limnology research on the ice with a mud thermometer. |
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