Cite

Mammoth-plate photographs of California [graphic].

MLA

Watkins, Carleton E., 1829-1916. Mammoth-plate photographs of California [graphic].. 1861-1868.. https://collections.library.yale.edu/catalog/2007527.

APA, 6th edition

Watkins, Carleton E., 1829-1916. (1861-1868.)[Mammoth-plate photographs of California [graphic].]. https://collections.library.yale.edu/catalog/2007527.