[No. 114. Old Faithful", Upper Geyser Basin, Yellowstone National Park]
MLA
Watkins, Carleton E., 1829-1916. [No. 114. Old Faithful", Upper Geyser Basin, Yellowstone National Park]. Folder 28. 1884-1885. https://collections.library.yale.edu/catalog/2016802.
APA, 6th edition
Watkins, Carleton E., 1829-1916. (["Folder 28"])(1884-1885)[[No. 114. Old Faithful", Upper Geyser Basin, Yellowstone National Park]]. https://collections.library.yale.edu/catalog/2016802.