Cite

"Columbia R. above Cascades - looking down." Watercolor, 23.5 x 30.6 cm.

MLA

Stenzel, Franz. "Columbia R. above Cascades - Looking down." Watercolor, 23.5 x 30.6 Cm. 1857. https://collections.library.yale.edu/catalog/10692044.

APA, 6th edition

Stenzel, F. (1857). "Columbia R. above Cascades - looking down." Watercolor, 23.5 x 30.6 cm. https://collections.library.yale.edu/catalog/10692044.