Collects One Million Years Ago #1; 3-D Comics (Vol 1) #2 (October 1953) and 3-D Comics (Vol 1) #2 (November 1953). This is not a typo, these are 2 different comics with the same numbering.
*Born over a million years ago, the primitive Tor lives in a world where man and dinosaur exist in a mad ballet of survival of the fittest. Accompanied only by his simian companion, Chee-Chee, the noble Tor endures a solitary existence in a landscape of savage humans, deadly creatures, and natural disasters. Reprinted in this volume of breathtaking art and dynamic storytelling are the original 1950s adventures of the primitive hero as he roams the Earth in defense of the helpless.
*Source: dccomics.com