Names
- Magonigle, Harold Van Buren, 1867-19351
- Manning, Warren H. (Warren Henry), 1860-19381
- Mathews, Charles Thompson, 1863-19341
- Mayers, Murray & Phillip1
- McBee, Silas, 1853-19241
- McClellan, Jessie T1
- McKim, Mead & White1
- Mead, William Rutherford, 1846-19281
- Metcalf, Bryce, 1874-19511
- Meteyard, Thomas Buford, 1865-19281
- Meyer, Henry C. (Henry Coddlington), 1870-1
- Meyer, Strong & Jones1
- Molesworth, Beatrice1
- Moore, Henry Wadsworth1
- Moore, John D1
- Myers, Harvey, 1828-18741
- Nebraska State Capitol (Lincoln, Neb.)1
- Neighborhood Music School (New York, N.Y.)1
- Newcomb, Edgar Allan Poe1
- Nobbs, Percy E (Percy Erskine), 1875-19641