MLA

Simpson, Randolph Linsly, 1927-1992. Alabama Postcard Co, Bessemer, AL "Father Hayes" stands on steps inside church, microphone in hand. Postcard in color. Box 25, folder 1036. circa 1970. https://collections.library.yale.edu/catalog/32312548.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 25, folder 1036"])(circa 1970)[Alabama Postcard Co, Bessemer, AL "Father Hayes" stands on steps inside church, microphone in hand. Postcard in color]. https://collections.library.yale.edu/catalog/32312548.