Topic
- Country life 7
- Industrial equipment 7
- Photography of railroads 6
- Mills and mill-work 5
- Photography of interiors 5
- Photography of trees 5
- Photography, Close-up 5
- Agriculture, Cooperative 4
- Corn 4
- Corn industry 4
- Factories 4
- Grain elevators 4
- Landscape --Iowa 4
- Railroad rails 4
- Railroads 4
- Steel industry and trade 4
- Storefronts 4
- Cemeteries 3
- Farmhouses 3
- Flour industry 3