MLA

Saarinen, Eero, 1910-1961. Committee brochures. Box 64, folder 71. undated. https://collections.library.yale.edu/catalog/10016917.

APA, 6th edition

Saarinen, Eero, 1910-1961. (["Box 64, folder 71"])(undated)[Committee brochures]. https://collections.library.yale.edu/catalog/10016917.