Cite

"Obelisk Rk Columbia R. below Cascades." Watercolor, 23.6 x 30.6 cm.

MLA

Stenzel, Franz (1906-1998). "Obelisk Rk Columbia R. below Cascades." Watercolor, 23.6 x 30.6 cm.. Box 3, folder 43. 1857. https://collections.library.yale.edu/catalog/10858237.

APA, 6th edition

Stenzel, Franz (1906-1998). (["Box 3, folder 43"])(1857)["Obelisk Rk Columbia R. below Cascades." Watercolor, 23.6 x 30.6 cm.]. https://collections.library.yale.edu/catalog/10858237.