MLA

Keller, Deane, 1901-1992. "Florence" [Allied Military Government art return ceremony]. Box 27, folder 106. 1940-1960 (inclusive), 1943-1946 (bulk). https://collections.library.yale.edu/catalog/10012696.

APA, 6th edition

Keller, Deane, 1901-1992. (["Box 27, folder 106"])(1940-1960 (inclusive), 1943-1946 (bulk))["Florence" [Allied Military Government art return ceremony]]. https://collections.library.yale.edu/catalog/10012696.