Edgar Rice Burroughs' Tarzan of the Apes #139

After his ape friend, Gorluk, suffers brain damage from a lion attack, Tarzan takes Gorluk to Dr. M'Zuri, a noted neurosurgen who has elected to live in the jungle. Tarzan discovers that M'Zuri practices mind-control on his servants. M'Zuri operates on Gorluk and Tarzan frees the servants.