51. Ft. Simpson on the North extreme of British Columbia. June 13, 1867
MLA
Porcher, Edwin Augustus. 51. Ft. Simpson on the North Extreme of British Columbia. June 13, 1867. 1867. https://collections.library.yale.edu/catalog/2004453.
APA, 6th edition
Porcher, E. A. (1867). 51. Ft. Simpson on the North extreme of British Columbia. June 13, 1867 [Watercolors (Paintings)]. https://collections.library.yale.edu/catalog/2004453.