MLA

Saarinen, Eero, 1910-1961. Publicity binder. Box 571, folder 1591. undated. https://collections.library.yale.edu/catalog/10017240.

APA, 6th edition

Saarinen, Eero, 1910-1961. (["Box 571, folder 1591"])(undated)[Publicity binder]. https://collections.library.yale.edu/catalog/10017240.