Same guy wrote "Image of the Beast" about transdimensional predatory parasitism in Los Angeles also wrote a book about Tarzan/Lord Greystoke.

The book is written on the premise that Tarzan was an actual person with original author Burroughs having written highly fictionalized and romanticized memoirs of Tarzan, which were based on Tarzan's own life stories and adventures. Farmer is then telling the "real story". Farmer examines the psychological make up of John Clayton (Tarzan's real name in the novels) and his peers, based on close readings of the various Burroughs books, accepting some of Burroughs' concepts and rejecting others in an attempt at greater verisimilitude. Among his conceits is that, since the apes described by Burroughs had a spoken language that Tarzan learned, these animals must have been "pithecanthropoids": "a group of rare hominids who are probably now extinct" and "not great apes".

BTW they not extinct and humans and great apes are cross fertile. Most biologist will say they aren't but this isn't true.

There is not a single experiment which demonstrates great apa and human genetics incompatible. Because they aren't. Manpanzees, Chumans?

Who would consider making say "super soldiers" who can scamper up the side of buildings etc.

Anyone come to mind?

https://en.wikipedia.org/wiki/Tarzan_Alive:_A_Definitive_Biography_of_Lord_Greystoke