MLA

Carson, Rachel, 1907-1964. American Geographical Society: Cullum Geographical Medal. Box 107, folder 2042. 1963-64. https://collections.library.yale.edu/catalog/10191695.

APA, 6th edition

Carson, Rachel, 1907-1964. (["Box 107, folder 2042"])(1963-64)[American Geographical Society: Cullum Geographical Medal]. https://collections.library.yale.edu/catalog/10191695.