Cite

"Some Valuable 'Spaces' for Advertisers."

MLA

Hansen, Bert, 1944-. "Some Valuable 'Spaces' for Advertisers.". Box 7. 1891 December 26. https://collections.library.yale.edu/catalog/32326922.

APA, 6th edition

Hansen, Bert, 1944-. (["Box 7"])(1891 December 26)["Some Valuable 'Spaces' for Advertisers."]. https://collections.library.yale.edu/catalog/32326922.