[MS, appendix]
MLA
Anderson, Thomas McArthur, 1836-1917. [MS, appendix]. Box 1 | Folder 5. https://collections.library.yale.edu/catalog/16695984.
APA, 6th edition
Anderson, Thomas McArthur, 1836-1917. (["Box 1 | Folder 5"])[[MS, appendix]]. https://collections.library.yale.edu/catalog/16695984.