Cite

[Postcard], Israel [to] Saul Steinberg, East Hampton, New York.

MLA

[Postcard], Israel [to] Saul Steinberg, East Hampton, New York. 0AD. https://collections.library.yale.edu/catalog/2016743.

APA, 6th edition

[Postcard], Israel [to] Saul Steinberg, East Hampton, New York. (0 C.E.). [Correspondence, Photographic postcards, Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2016743.