Cite

[Photographic portrait of P.T. Barnum with visage of Abraham Lincoln imposed in background]

MLA

Bogardus, A. (Abraham), 1822-1908. [Photographic portrait of P.T. Barnum with visage of Abraham Lincoln imposed in background]. [1869]. https://collections.library.yale.edu/catalog/16698332.

APA, 6th edition

Bogardus, A. (Abraham), 1822-1908. ([1869])[[Photographic portrait of P.T. Barnum with visage of Abraham Lincoln imposed in background]]. https://collections.library.yale.edu/catalog/16698332.