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- Architecture, American 273
- Architecture--United States 246
- Lichens 56
- Architecture 27
- Barns 17
- Dwellings 17
- Oregon State University. Extension Service 13
- Agriculture 6
- Universities and colleges--Faculty 5
- Harvey, Frances Madeleine 4
- Roads 4
- Canneries 3
- Children 3
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- 4-H clubs 2
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- Canning and preserving--Equipment and supplies 2
- Food industry and trade 2
- Mines and mineral resources 2
- Automobiles 1