"View in Fort Williams"
MLA
Simpson, Randolph Linsly, 1927-1992. "View in Fort Williams". Box 11, folder 497. undated. https://collections.library.yale.edu/catalog/10724182.
APA, 6th edition
Simpson, Randolph Linsly, 1927-1992. (["Box 11, folder 497"])(undated)["View in Fort Williams"]. https://collections.library.yale.edu/catalog/10724182.