"Cold, Bitter Cold!"
MLA
Hansen, Bert, 1944-. "Cold, Bitter Cold!". Box 11, folder 17. 1888 January 25. https://collections.library.yale.edu/catalog/32326784.
APA, 6th edition
Hansen, Bert, 1944-. (["Box 11, folder 17"])(1888 January 25)["Cold, Bitter Cold!"]. https://collections.library.yale.edu/catalog/32326784.