Cite

[Pony Express rider attacked by three Indians], lobby card, 11 x 14

MLA

[Pony Express Rider Attacked by Three Indians], Lobby Card, 11 x 14. 0AD. https://collections.library.yale.edu/catalog/2019900.

APA, 6th edition

[Pony Express rider attacked by three Indians], lobby card, 11 x 14. (0 C.E.). https://collections.library.yale.edu/catalog/2019900.