Topic
- Silos 29
- Abandoned farms 27
- Railroads 24
- Abandoned buildings 22
- Agriculture, Cooperative 21
- Feed industry 21
- Landscape --Iowa 21
- Sheet-metal, Corrugated 21
- Photography of men 20
- Photography of wood 20
- Grain --Storage 19
- Photography, Close-up 18
- Agricultural implements 17
- Windows 17
- Feed mills 15
- Portrait photography 15
- Electric lines 14
- Photography of ships 14
- Mills and mill-work 13
- Rural roads 13