Subjects
- Loading docks.1
- Louisbourg (N.S.)--History--Siege, 1758.1
- Louisiana Purchase.1
- Machine shops.1
- Machinery.1
- Mail.1
- Manufacturing.1
- Markets--California--San Francisco.1
- Markets--New York--New York.1
- Masonry.1
- Materialization.1
- Mediums--United States.1
- Metallurgical industry.1
- Metalwork.1
- Mexican War, 1846-1848.1
- Miami Indians.1
- Mines.1
- Mingo Indians.1
- Mining--United States.1
- Mining.1