A history of humanzees, born from female chimps impregnated with human sperm

The early 20th century was a hotbed of genetic experimentation. One bizarre line of research explored human-nonhuman hybrids, such as humanzees. At least one such case of a humanzee making it to term is described in History of Yesterday:

An evolutionary psychologist by the name ofGordon Gallupstated that in the 1920s thefirsthumanzeewas "born" at a secret research facility in Florida.