Cite

Beaman, E. O. Colorado River (in Series I)

MLA

Dellenbaugh, Frederick Samuel, 1853-1935. Beaman, E. O. Colorado River (in Series I). Box 7, folder 171. 1870-1934. https://collections.library.yale.edu/catalog/2018165.

APA, 6th edition

Dellenbaugh, Frederick Samuel, 1853-1935. (["Box 7, folder 171"])(1870-1934)[Beaman, E. O. Colorado River (in Series I)]. https://collections.library.yale.edu/catalog/2018165.