The caption on what appears to be a black-and-white photograph in the image portion of this picture postcard is "I've got to hand it to you," stating that keeper Byron Moore is with an animal named "Koko." Moore is holding a branch full of what look like berries so that what appears to be a chimpanzee (and not the famous signing gorilla named Koko) can eat the fruit. The chimpanzee is squatting on the ground, while Moore is down on one knee. According to the IUCN (International Union for Conservation of Nature and Natural Resources), in 2020 chimpanzees are classified as "endangered."
