- 2 Municipal government
- 3 Municipal Hospital
- 2 Municipal officials
- 3 Municipal officials
- 2 Municipalities
- 10 Murals
- 9 Murders
- 2 Murphy & Allison Junction Car Works
- 1 Murphy & Lehman's Foundary
- 1 Murphy, A. & J. Stable
- 1 Murphy-Parker Co. Book Binders (Firm)
- 1 Murray, John MD
- 1 Murray, John, 1778-1843
- 1 Murray, John, 1808-1892
- 1 Murray, William H. (William Henry), 1790-1852
- 1 Muscle Shoals, Alabama (sand bar)
- 7 Museum of Archaeology and Anthropology
- 72 Museums (buildings)
- 5 Museums (institutions)
- 4 Musgrave Street
- 1 Musher
- 4 Mushrooms
- 187 Music
- 1 Music boxes
- 44 Music ensembles
- 20 Music halls
- 3 Music Room
- 1 Music schools (buildings)
- 1 Music stands
- 4 Music stores
- 1 Music Teacher Artist
- 3 Music trade
- 8 Music, Sacred
- 15 Musical Fund Hall
- 9 Musical instrument industry
- 178 Musical instruments
- 626 Musical notation
- 117 Musicians
- 1 Musicians' unions
- 1 Muskets
