Matheson, W. J.
MLA
MacDonald, George, 1824-1905. Matheson, W. J.. Box 2, folder 105. n.d.. https://collections.library.yale.edu/catalog/16474498.
APA, 6th edition
MacDonald, George, 1824-1905. (["Box 2, folder 105"])(n.d.)[Matheson, W. J.]. https://collections.library.yale.edu/catalog/16474498.