Cornell University Library Digital Collections
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Subject
- Duluth, Missabe, and Iron Range Railway45
- Iron Ore[remove]45
- Mines and mineral resources45
- Industries (organizations)44
- Railroad cars38
- Railroad tracks37
- Railroads--Freight36
- Locomotives31
- Viaducts25
- Railroads--Signaling18
- Railroads--Buildings and structures12
- Railroads--Employees12
- Pit Mine11
- Railroad switches10
- Locomotive firemen5
- Shipping5
- Bridges (built works)3
- Railroad crossings1
- Railroad yards1
- Railroads--Equipment and supplies1