Cite

Looking down the canon, toward Aspen

MLA

Ingersoll, Ernest, 1852-1946, Jackson, William Henry, 1843-1942. Looking down the canon, toward Aspen. https://collections.library.yale.edu/catalog/2018659.

APA, 6th edition

Ingersoll, Ernest, 1852-1946, & Jackson, William Henry, 1843-1942. [Looking down the canon, toward Aspen]. https://collections.library.yale.edu/catalog/2018659.