Names
- Morgan, Albert Talmon, 1841-19221
- Morgan, Albert Talmon, 1841-1922.1
- Morgan, Angela, 1874-19571
- Morgan, Angela, 1874-1957.1
- Morgan, G. Campbell (George Campbell), 1863-1945.1
- Morgan, G. Campbell, (1863- )1
- Morris, Sam.1
- Morrison, Charles Clayton, 1874-1966.1
- Morton, Thruston B. (Thruston Ballard), 1907-1982.1
- Mott, John Raleigh, 1865-1955.1
- Murphy, George, 1902-1992.1
- Musser, Benjamin Francis1
- Musser, Benjamin Francis.1
- Muste, Abraham John, 1885-1967.1
- National Cathedral Association1
- National Cathedral Association.1
- National Kindergarten Association1
- National Kindergarten Association.1
- National League of American Pen Women.1
- National Music League1