Cite

"The American Colossus."

MLA

Hansen, Bert, 1944-. "The American Colossus.". Box 1, folder 2. 1880. https://collections.library.yale.edu/catalog/32320839.

APA, 6th edition

Hansen, Bert, 1944-. (["Box 1, folder 2"])(1880)["The American Colossus."]. https://collections.library.yale.edu/catalog/32320839.