MLA

Lee, Richard C. (Richard Charles), 1916-2003. "The Mayor and The Changing City" and groundbreaking for Labor Temple. Box 143, folder 2469. 1966 August. https://collections.library.yale.edu/catalog/10014774.

APA, 6th edition

Lee, Richard C. (Richard Charles), 1916-2003. (["Box 143, folder 2469"])(1966 August)["The Mayor and The Changing City" and groundbreaking for Labor Temple]. https://collections.library.yale.edu/catalog/10014774.