Cite

Aqueduct Pipes Crossing Humbug Canon, North Bloomfield Mining, Co., Nevada Co

MLA

Watkins, Carleton E., 1829-1916. Aqueduct Pipes Crossing Humbug Canon, North Bloomfield Mining, Co., Nevada Co. Watkins 4. ca. 1880. https://collections.library.yale.edu/catalog/2056991.

APA, 6th edition

Watkins, Carleton E., 1829-1916. (["Watkins 4"])(ca. 1880)[Aqueduct Pipes Crossing Humbug Canon, North Bloomfield Mining, Co., Nevada Co]. https://collections.library.yale.edu/catalog/2056991.