MLA

Saarinen, Eero, 1910-1961. Saarinen family caricatures. Box 7, folder 60. undated. https://collections.library.yale.edu/catalog/10015786.

APA, 6th edition

Saarinen, Eero, 1910-1961. (["Box 7, folder 60"])(undated)[Saarinen family caricatures]. https://collections.library.yale.edu/catalog/10015786.