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Topic
- Oregon Agricultural College. Experiment Station 32
- Plants, Cultivated--Field experiments 27
- Sulfur fertilizers 27
- Oregon State Agricultural College. Agricultural Experiment Station 6
- Potassium fertilizers 6
- Hops 5
- Nitrogen fertilizers 5
- Hens 3
- Knowlton, Frank L. (Frank Lester), 1894-1940 3
- Poultry 3
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Work Type
- photographs 48
- black-and-white photographs 43
- photographic prints 41
- panoramic photographs 2
- postcards 1
Region
- Oregon >> United States 48
- Independence >> Polk County >> Oregon >> United States 2
Local Collection Name
- Agricultural Experiment Station Photographic Collection, ca. 1900-1988 (P 029) 41
- Extension Bulletin Illustrations Photograph Collection, 1915-1963 (P 020) 2
- Zoller Hop Company Records, 1900-2006 (MSS Zoller) 2
- Extension Service Photographs, 1900-2007 (P 062) 1
- Food Science and Technology Department Photographs, 1900-1963 (P 142) 1
- Oregon State University Historical Photographs, 1868-1980 (P 025) 1
Format
- image/tiff 48
Decade
- 1920-1929 48