Author
- Mason, David H. (David Hastings), 1828-19031
- Maswood, Syed Javed1
- Mattoo, Aaditya2
- Matusz, Steven Joseph1
- Maude, A. H1
- Mauger, Samuel2
- May, James1
- May, Phil, 1864-19031
- Mayer, Wolfgang1
- McDonnell, Alexander, 1798-18353
- McGee, Robert W1
- McGinnes, Jane M1
- McGuire, Greg1
- McGuire, Martin C1
- McLean, Ross, 1944-1
- Mechanics and Manufacturers Convention (1840 Feb. 27 : Middletown, Conn.)1
- Mechanics and Manufacturers Convention, (1840 Feb. 27 : Middletown, Conn.)1
- Medley, George Webb, 1826-18981
- Meeting of Salt Manufacturers (1827 : New Bedford, Mass.)2
- Melish, John, 1771-18225