Cite

Aspen. Colorado No. 14.

MLA

Ingersoll, Ernest, 1852-1946, Jackson, William Henry, 1843-1942. Aspen. Colorado No. 14.. https://collections.library.yale.edu/catalog/2018653.

APA, 6th edition

Ingersoll, Ernest, 1852-1946, & Jackson, William Henry, 1843-1942. [Aspen. Colorado No. 14.]. https://collections.library.yale.edu/catalog/2018653.