printed, lower center underneath image in black ink: ANIMAL LOCOMOTION PLATE. 175 / copyright, 1887, by Eadweard Muybridge. All rights reserved.; on verso, by unknown hand, lower left in red pencil: 87.7.180
Eadweard Muybridge, Philadelphia, PA; purchased by the Corcoran Gallery of Art, Washington, DC, 1887; acquired by NGA, 2014.