MLA

Saarinen, Eero, 1910-1961. Competition boards. Box 246, folder 833. undated. https://collections.library.yale.edu/catalog/10017183.

APA, 6th edition

Saarinen, Eero, 1910-1961. (["Box 246, folder 833"])(undated)[Competition boards]. https://collections.library.yale.edu/catalog/10017183.