M
- Machine shops. (3)
- Machinery industry. (7)
- Machinery. (286)
- Magnolias. (24)
- Mailboxes. (5)
- Maintenance & repair. (86)
- Manholes. (5)
- Mantels. (18)
- Maples. (8)
- Maps. (19)
- Marble. (3)
- Markets. (4)
- May poles. (12)
- Mayors. (1)
- Meadows. (2)
- Meat industry. (1)
- Mechanics (Persons). (2)
- Medallions (Ornament areas). ()
- Medals. (3)
- Medical aspects of war. (1)
- Medical equipment & supplies. (4)
- Medical offices. (54)
- Medicines. (2)
- Meetings. (97)
- Melons. (3)
- Men. (193)
- Merchandise displays. (365)
- Metalwork. (18)
- Metalworking. (2)
- Methodist churches. (8)
- Mexico. (1)
- Military bands. (3)
- Military camps. (9)
- Military education. (118)
- Military facilities. (35)
- Military maneuvers. (7)
- Military officers. (41)
- Military parades & ceremonies. (12)
- Military personnel. (3)
- Military training. (24)
- Milk. (2)
- Millinaries. (1)
- Mills. (9)
- Minarets. (2)
- Miners' strikes. (4)
- Miners. (5)
- Mines (Warfare). (1)
- Mining. (6)
- Mirrors. (4)
- Mixed media. (1)
- Model airplanes. (14)
- Model houses. (27)
- Model railroads. (2)
- Model ships. (3)
- Models. (83)
- Monasteries. (5)
- Monkeys. (3)
- Monuments & memorials. (900)
- Moon. (2)
- Morgues & mortuaries. (2)
- Mormon churches. (1)
- Mosaics. (6)
- Mosques. (2)
- Mothers & children. (26)
- Motion picture theaters. (8)
- Motorcycles. (2)
- Mountains. (9)
- Mounted police. (4)
- Moving & storage trade. (1)
- Mowing. (2)
- Mules. (1)
- Murals. (121)
- Mushrooms. (1)
- Music ensembles. (2)
- Music stores. (1)
- Musicians. (16)