MLA

Simpson, Randolph Linsly, 1927-1992. Hat pin with image of smiling black boy, sterling silver image, brass pin, 7" long o.a. Image 3/4 x ½. Box 41, folder 1174. undated. https://collections.library.yale.edu/catalog/9999053.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 41, folder 1174"])(undated)[Hat pin with image of smiling black boy, sterling silver image, brass pin, 7" long o.a. Image 3/4 x ½]. https://collections.library.yale.edu/catalog/9999053.