TARZAN THE UNTAMEDWith the speed of the great apes, Tarzan rushed through the jungle toward his home and family. But he was already too late. The marauders had been there before him. His farm was in shambles and no one was left alive. Silently, he swore his terrible vengeance against those who had done this monstrous deed. Then he set out grimly to track them . . . through warring armies . . . across a vast desert that no man had ever crossed . . . and to a strange valley where only madmen lived.

TARZAN THE TERRIBLE

Lieutenant Obergatz had fled in terror from the seeking vengeance of Tarzan of the Apes. And with him, by force, he had taken Tarzan's beloved mate, Jane. Now the ape-man was following the faint spoor of their flight, into a region no man had ever penetrated. The trail led across seemingly impassable marshes into Pal-ul-don--a savage land where primitive Waz-don and Ho-don fought fiercely, wielding knives with their long, prehensile tails--and where mighty triceratops still survived from the dim dawn of time . . .