Paul Du Chaillu, the Source of Tarzan?

Sarkis Atamian's book--"The Origin of Tarzan: The Mystery of Tarzan's Creation Solved" (Sarkis Atamian) --suggested Du Chaillu's African books might be the source for Edgar Rice Burroughs' inspiration of the famous ape-man: Tarzan of the Apes.

“The roar of the gorilla is the most singular and awful noise heard in these African woods. It begins with a sharp bark, like an angry dog; then glides into a deep bass roll, which literally and closely resembles the roll of distant thunder along the sky, for which I have sometimes been tempted to take it where I did not see the animal. So deep is it that it seems to proceed less from the mouth and throat than from the deep chest and vast paunch.”

Not to be confused, of course, with Philip Jose Farmer's "Tarzan Alive."

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