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- Electric lines--New York (State), Western--Maps 3
- Electric lines--Ontario--Maps 3
- Electric power transmission--New York (State), Western--Maps 2
- Electric power transmission--New York (State)--Niagara Falls--Maps 2
- Electric power transmission--Ontario--Maps 2
- Electric power transmission--Ontario--Niagara Falls--Maps 2
- Groundwater--Arkansas--Maps 2
- Groundwater--Louisiana--Maps 2
- Adirondack League Club 1
- E 1
- Forest reserves--Arizona--Maps 1
- Geology--British Columbia--Rossland Region--Maps 1
- Geology--North America--Maps 1
- Indian reservations--Arizona--Maps 1
- Indians of North America --Land tenure --Oklahoma 1
- Indians of North America --Property 1
- Mines and mineral resources--Colorado--Clear Creek County--Maps. 1
- Mines and mineral resources--Colorado--Gilpin County--Maps. 1
- Mining claims--Colorado--Clear Creek County--Maps. 1
- Mining claims--Colorado--Gilpin County--Maps. 1