Names
- Matsas, Helene1
- May, Herbert1
- May, Herbert A.1
- May, Herbert Arthur, 1892-1966.1
- McAuliffe, General A.C.1
- Merriweather Family1
- Merriweather family1
- Meyer Handelman1
- Modig, Gus1
- Moffat, Margaret1
- Montgomery, Kenneth F.1
- Morrow, William L.1
- Mount Vernon Seminary1
- National Association of Manufacturers1
- National Association of Manufacturers (U.S.)1
- National Conference of Christians and Jews1
- National Council for Industrial Defense.1
- National Cyclopedia of American Biography1
- National Federation of Music Clubs1
- National Gallery of Art1