Subjects
- Metallurgical industry.1
- Metalwork.1
- Mines.1
- Mining--1890-1920.1
- Mining.1
- Money.1
- Monuments & memorials--Massachusetts--1880-1920.1
- Mountain railroads.1
- Mules--1890-1920.1
- Naval yards & naval stations.1
- Offices.1
- Ordnance industry.1
- Paper industry.1
- Parades & processions--Wisconsin--1910-1920.1
- People associated with manual labor.1
- Petroluem industry.1
- Pets--United States.1
- Photographers--United States.1
- Piers & wharves.1
- Postal service.1