Contract authorizing accountant Bernard J. Reis to negotiate contracts with the Sidney Janis Gallery on behalf of Robert Motherwell, Philip Guston, Mark Rothko, Franz Kline, and Willem de Kooning. Signed by all five artists.
Handwritten contract with Bernard J. Reis, 1958 May 18. Bernard J. Reis papers, 1934-1979. Archives of American Art, Smithsonian Institution.
Current copyright status is undetermined
Archives of American Art, Smithsonian Institution Washington, D.C. 20560