- Mineral products of the United States, 18841
- Mineral springs of the United States1
- Mineral waters3
- Mineral waters in 18921
- Mineral waters in 18931
- Minutes of the proceedings of the Quarantine Convention: held at Philadelphia by invitation of the Philadelphia Board of Health, May 13-15, 18571
- Minutes of the sixth Decennial Convention for the Revision of the Pharmacopoeia of the United States1
- Miss Carpenter's Report: the prisons of the United States1
- Modern industrial progress and the influences accelerating its march: an address delivered at the opening of the forty-first annual exhibition of the American Institute of the City of New York1
- Modern persecution, or, Insane asylums unveiled: as demonstrated by the report of the Investigating Committee of the Legislature of Illinois1
- Modern persecution, or, Insane asylums unveiled: as demonstrated by the report of the Investigating Committee of the Legislature of Illinois (Volume 1)1
- Modern persecution, or, Insane asylums unveiled: as demonstrated by the report of the Investigating Committee of the Legislature of Illinois (Volume 2)1
- Modification of passport order1
- Moisture and dryness, or the analysis of atmospheric humidities in the United States: an essay read before the American Climatological Association (1884), and including the presentation of a rule of moisture and dryness, by which the climate is evenly subdivided according to the combined evidences of moisture, together with seasonal cloudiness and absolute humidity Signal Service charts1
- Morse's patent: full exposure of Dr. Chas. T. Jackson's pretensions to the invention of the American electro-magnetic telegraph1
- Mortality from casualties1
- Mortality from suicides1
- Mortality in each year among the officers of the army (including those killed in battle) for fifty years: from 1824-1873, as derived from the Army registers1
- Mortuary experience of the Mutual Life Insurance Company of New York: with tabulated reports and an analysis of the causes of death1
- Mortuary law1