Cite

Untitled [Landscape and envelope fragment with postage stamps]

MLA

Steinberg, Saul, 1914-1999. Untitled [Landscape and envelope fragment with postage stamps]. Box 91, folder 1979. undated. https://collections.library.yale.edu/catalog/33524331.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 91, folder 1979"])(undated)[Untitled [Landscape and envelope fragment with postage stamps]]. https://collections.library.yale.edu/catalog/33524331.