Cite

[Never travel without Bracer's nerve food] [art original]

MLA

Opper, Frederick Burr, 1857-1937, artist. [Never travel without Bracer's nerve food] [art original]. [before 1937]. https://collections.library.yale.edu/catalog/17339918.

APA, 6th edition

Opper, Frederick Burr, 1857-1937, artist. ([before 1937])[[Never travel without Bracer's nerve food] [art original]]. https://collections.library.yale.edu/catalog/17339918.