Sitting outside on bench next to dog
MLA
O'Neill, Eugene, 1888-1953. Sitting outside on bench next to dog. Box 108, folder 1808. [ca. 1893]. https://collections.library.yale.edu/catalog/2013200.
APA, 6th edition
O'Neill, Eugene, 1888-1953. (["Box 108, folder 1808"])([ca. 1893])[Sitting outside on bench next to dog]. https://collections.library.yale.edu/catalog/2013200.