MLA

Stenzel, Franz (1906-1998). "Residence of Col. M. T. Simmons Skookum Bay Hammish[?] Inlet, W.T." Pencil drawing, 18 x 23 cm.. Box 8, folder 155. 1859 Jul. https://collections.library.yale.edu/catalog/2003272.

APA, 6th edition

Stenzel, Franz (1906-1998). (["Box 8, folder 155"])(1859 Jul)["Residence of Col. M. T. Simmons Skookum Bay Hammish[?] Inlet, W.T." Pencil drawing, 18 x 23 cm.]. https://collections.library.yale.edu/catalog/2003272.