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| Date: | 10 16 1945 |
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| Description: | Slightly elevated view of five women workers in an Oscar Mayer Company test kitchen and laboratory. A low wall is separating two women working at desks on ... |
| Date: | 1953 |
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| Description: | Trucks mounting a steep grade in the testing track at International Harvester's Phoenix Proving Ground. Opened in 1947, the proving ground was used by Inte... |
| Date: | 1953 |
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| Description: | View of International Harvester's Phoenix Proving Ground. Opened in 1947, the proving ground was used by International Harvester through the 1970's to test... |
| Date: | 1953 |
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| Description: | Stone displaying ancient writing. The rock was on the grounds of International Harvester's Phoenix Proving Grounds. Opened in 1947, the proving ground was... |
| Date: | 1953 |
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| Description: | Cacti frame three International semis and a pickup on a test track at International Harvester's Phoenix Proving Ground. Opened in 1947, the proving ground ... |
| Date: | 1953 |
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| Description: | Headquarters building for truck testing at International Harvester's Phoenix Proving Ground. Opened in 1947, the proving ground was used by International H... |
| Date: | 1953 |
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| Description: | International Harvester 27-75 earthmover being demonstrated in front of a grandstand at International Harvester's Phoenix Proving Ground. Opened in 1947, t... |
| Date: | 1961 |
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| Description: | An experimental International HT 340 tractor is being tested by a man wearing a helmet in an outdoor environment. Other men are standing in the background. |
| Date: | 03 30 1933 |
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| Description: | A man in a field holds a very large kite just prior to launching it. On the kite is painted the number 43 and "Property of the U.S. Weather Bureau." He is ... |
| Date: | 12 20 1956 |
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| Description: | Otis Bersing, state game manager, compiles information on the trees and shrubs in the state of Wisconsin with mounted leaf specimens in his botanical colle... |
| Date: | 11 18 1919 |
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| Description: | Close-up of a glass-walled container of corn plants, showing the growth of the plants and the roots. |
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| Description: | Two young women wearing waders are standing in a creek or small river. One of the women is holding a net just above the water, while the other women is exa... |
| Date: | 10 1978 |
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| Description: | Two men are kneeling on the ground. One man is holding a shovel while the other man is scooping dirt from the shovel into a glass jar. They are measuring P... |
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| Description: | A man wearing hip waders is standing in wetlands holding a collecting screen. He is collecting helgramites (a type of insect larva) to be used as bait for ... |
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