MLA

Stenzel, Franz (1906-1998). "Columbia R. Oregon - opposite Fort Vancouver." Pencil drawing with wash, 17.9 x 26.8 cm.. Box 2, folder 24. 1854 Jul. https://collections.library.yale.edu/catalog/10691239.

APA, 6th edition

Stenzel, Franz (1906-1998). (["Box 2, folder 24"])(1854 Jul)["Columbia R. Oregon - opposite Fort Vancouver." Pencil drawing with wash, 17.9 x 26.8 cm.]. https://collections.library.yale.edu/catalog/10691239.