Cite

Untitled [Map series: Cosmos map]

MLA

Steinberg, Saul, 1914-1999. Untitled [Map series: Cosmos map]. Box 423, folder 5727. undated. https://collections.library.yale.edu/catalog/2020069.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 423, folder 5727"])(undated)[Untitled [Map series: Cosmos map]]. https://collections.library.yale.edu/catalog/2020069.