The flag is the flag of the Emma Dean, Powell's boat of 1871-72. F.S. D
MLA
Bros, Kolb. The Flag Is the Flag of the Emma Dean, Powell's Boat of 1871-72. F.S. D. 1928. https://collections.library.yale.edu/catalog/2018280.
APA, 6th edition
Bros, K. (1928). The flag is the flag of the Emma Dean, Powell's boat of 1871-72. F.S. D [Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2018280.