Subjects
- Military facilities--China--1910-19301
- Military facilities--United States--1890-1900.1
- Military life--United States--1930-1940.1
- Military officers--American--1890-1900.1
- Militias--United States--1890-1900.1
- Mines.1
- Mining--1890-1920.1
- Mining--United States.1
- Mining.1
- Missionaries--American--United States--1880-1900.1
- Modoc War, 1872-1873--Historic sites.1
- Mohave Indians.1
- Money.1
- Mountain railroads.1
- Mountaineering--Oregon--1900-1910.1
- Mountains--Oregon--1900-1910.1
- Mountains--United States--1890-1900.1
- Mules--1890-1920.1
- Musicians--Michigan--1890-1910.1
- Native American boarding schools--Oregon--1900-1910.1