[Alcatraz]
MLA
Watkins, Carleton E., 1829-1916. [Alcatraz]. Folder 22. [ca. 1860-1861]. https://collections.library.yale.edu/catalog/2017955.
APA, 6th edition
Watkins, Carleton E., 1829-1916. (["Folder 22"])([ca. 1860-1861])[[Alcatraz]]. https://collections.library.yale.edu/catalog/2017955.