Cite

Half Dome as seen from the trail to Cloud's Rest. A21

MLA

Half Dome as Seen from the Trail to Cloud's Rest. A21. 0AD. https://collections.library.yale.edu/catalog/2017101.

APA, 6th edition

Half Dome as seen from the trail to Cloud's Rest. A21. (0 C.E.). [Lantern slides, Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2017101.