The first Edgar Rice Burroughs book about Tarzan was a tour-de-force of imagination, and the subsequent Tarzan stories made great reading, specially for younger readers. I read through the entire series in my mid-teens. They were naturally tailored to suit the cultural expectations of English-speaking people in the late 19th to early 20th century. Pretty exciting stuff! I remember that the ape tribe was led by a brutal silverback named Kerchak, if I recall correctly, and that he would periodically fly into a frenzy of blind rage for no particular reason, attacking others without reason, and that Tarzan eventually had a battle to the death with him. Tarzan's adoptive ape mother was named Kala.

Chongo is, of course, a big fan of those books, even though he's not exactly fond of gorillas.