Label of the Betty Parsons Gallery on verso with handwritten notes: Pollock; no. 1A-48; coll. Museum of Modern Art
Reproduction of Jackson Pollock's painting No. 1A, 1948 / Oliver Baker, photographer. Betty Parsons Gallery records and personal papers, circa 1920-1991, bulk 1946-1983. Archives of American Art, Smithsonian Institution.
Archives of American Art, Smithsonian Institution Washington, D.C. 20560