Cite

[Photograph of initials carved into a tree trunk]

MLA

[Photograph of Initials Carved into a Tree Trunk]. 1962. https://collections.library.yale.edu/catalog/2067944.

APA, 6th edition

[Photograph of initials carved into a tree trunk]. (1962). [Negatives]. https://collections.library.yale.edu/catalog/2067944.