- Kommune I1
- Komodore, Bill1
- Leigh, W.R.1
- Lemaitre, Maurice, 1926-1
- Lemaître, Maurice, 1926-1
- Lissitzky-Küppers, Sophie, 1891-19781
- Lozowick, Louis, 1892-19731
- Manufacture de porcelaine de l'Etat de Leningrad1
- Matveev, Aleksandr Terent'evich, 1878-19601
- Mel'nikov, Konstantin Stepanovich, 1890-19741
- Mendez, Leopoldo, 1902-19691
- Mercuri, Anita1
- Mies van der Rohe, Ludwig, 1886-19691
- Moon, Carl, 1878-19481
- Mora, F. Luis (Francis Luis), 1874-19401
- Morgan1
- Morisse, Andre von1
- Museum of Modern Art (New York, N.Y.)1
- Müller, Inge, 1925-19661
- Nicolas, Emile1
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