Cite

"The Modern Builder."

MLA

Hansen, Bert, 1944-. "The Modern Builder.". Box 8, folder 11. 1880 January 7. https://collections.library.yale.edu/catalog/32327060.

APA, 6th edition

Hansen, Bert, 1944-. (["Box 8, folder 11"])(1880 January 7)["The Modern Builder."]. https://collections.library.yale.edu/catalog/32327060.