Topic
- Bridges 3
- Canals--Design and construction--Costs 3
- Ethnic costume 3
- Indians of North America--Boats 3
- Indians of North America--Fishing 3
- Landscapes 3
- Scenic byways 3
- Traditional fishing 3
- Fishers 2
- Landscape photography--West (U.S.) 2
- Railroad engineering 2
- River surveys 2
- Roads--Design and construction 2
- Rocks 2
- Tourism 2
- Tunnels 2
- West (U.S.) 2
- Aerial photography 1
- Dinghies 1
- Formations (Geology) 1
