MLA

Koch, Frederick R. (Frederick Robinson). Other Papers/Papers removed from album. Box 320, folder 1711. 1846 Jan 25. https://collections.library.yale.edu/catalog/2041227.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 320, folder 1711"])(1846 Jan 25)[Other Papers/Papers removed from album]. https://collections.library.yale.edu/catalog/2041227.