- Minnesota1
- Minority Groups1
- Mitchill, Samuel L. (Samuel Latham), 1764-1831.1
- Moore, Samuel W. (Samuel William), 1786-1854.1
- Morton, W. T. G. (William Thomas Green), 1819-1868.1
- Mott, Valentine, 1785-1865.1
- Movement Disorders1
- Murray, John, 1758-1819.1
- N.Y. City Asylum for the Insane.1
- Nassau Water Company.1
- Neoplasms1
- Nervous System Diseases1
- Neuralgia1
- Neuralgia -- surgery1
- New Hampshire1
- New York (N.Y.). Clinic for the Treatment of Communicable Pulmonary Diseases.1
- New York (N.Y.). Committee on Fire and Water.1
- New York (N.Y.). Department of Health. Bacteriological Laboratory.1
- New York (N.Y.). Department of Public Charities and Correction.1
- New York (State). Legislature.1