Cite

Grand Canyon

MLA

Dellenbaugh, Frederick Samuel, 1853-1935. Grand Canyon. Box 2, folder 73. n.d.. https://collections.library.yale.edu/catalog/2017925.

APA, 6th edition

Dellenbaugh, Frederick Samuel, 1853-1935. (["Box 2, folder 73"])(n.d.)[Grand Canyon]. https://collections.library.yale.edu/catalog/2017925.