Cite

[No. 1409. View of Seven Falls (Cheyenne Falls) on South Cheyenne Creek, South Cheyenne Canyon (El Paso County), Colorado. A wooden staircase is near the waterfall]

MLA

Jackson, William Henry, 1843-1942. [No. 1409. View of Seven Falls (Cheyenne Falls) on South Cheyenne Creek, South Cheyenne Canyon (El Paso County), Colorado. A wooden staircase is near the waterfall]. Folder 42. 1878-1898. https://collections.library.yale.edu/catalog/2016816.

APA, 6th edition

Jackson, William Henry, 1843-1942. (["Folder 42"])(1878-1898)[[No. 1409. View of Seven Falls (Cheyenne Falls) on South Cheyenne Creek, South Cheyenne Canyon (El Paso County), Colorado. A wooden staircase is near the waterfall]]. https://collections.library.yale.edu/catalog/2016816.