Subjects
- Iron mines and mining.1
- Journalism, Outdoor--Michigan1
- Journalists--Michigan--Directories.1
- Labor--Michigan.1
- Leisure--Michigan.1
- Lighthouses--Michigan.1
- Loggers--Michigan.1
- Logging railroads.1
- Logging--Michigan.1
- Lumber camps--Michigan.1
- Lumbering.1
- Lumbermen.1
- Mineral industries.1
- Mining machinery.1
- Mining--Michigan.1
- Occupations--Michigan.1
- Outdoor life.1
- Parks--Michigan.1
- Railroad stations--Michigan.1
- Railroads--Design and construction.1