Cite

Summer: Arizona, Utah (Rainbow Bridge)

MLA

Oastler, Frank Richard, 1871-1936. Summer: Arizona, Utah (Rainbow Bridge). Box 29, folder 29. [1922]. https://collections.library.yale.edu/catalog/15829929.

APA, 6th edition

Oastler, Frank Richard, 1871-1936. (["Box 29, folder 29"])([1922])[Summer: Arizona, Utah (Rainbow Bridge)]. https://collections.library.yale.edu/catalog/15829929.