MLA

Saarinen, Eero, 1910-1961. Interiors. Box 329, folder 921. 1962, undated. https://collections.library.yale.edu/catalog/10017466.

APA, 6th edition

Saarinen, Eero, 1910-1961. (["Box 329, folder 921"])(1962, undated)[Interiors]. https://collections.library.yale.edu/catalog/10017466.