- Marin, John, 1870-1953--Exhibitions2
- McBride, Henry, 1867-19622
- Metropolitan Museum of Art (New York, N.Y.)2
- Michaux, Henri,--1899-19842
- Neville, Richard,--1941-2016--Ownership.2
- O'Keeffe, Georgia, 1887-1986--Exhibitions2
- Phillips, Duncan, 1886-19662
- Picasso, Pablo, 1881-19732
- Richter, Lilette2
- Romney, Richard Adams, 1918-2
- Seyersted, Per, 1921-2
- Walsh, M. M. B2
- AFL-CIO1
- Academy of American Poets--Correspondence1
- Accion Comunista (Organization : Spain)1
- Aden, Alonzo J. 1906-19611
- Adler, Renata 1
- Agricultural Workers Organizing Committee1
- Alcalay, Ammiel, editor of series1
- Alfred A. Knopf, Inc1