The Joe Kubert Library. Joe Kubert Tor Vol. 2 reprints Tor #3-5 from 1954, along with 27 pages of sketches and other supplemental material.
From the publisher:
The second in a three-part comprehensive anthology series, JOE KUBERT'S TOR VOL. 2 reprints the legendary exploits of Tor, the primitive warrior who lived over a million years in the past. Collecting eight tales of the solitary hero, this amazing book chronicles Tor's perilous life in a world of human savagery and Jurassic terror. Also featured in this stunning edition are fascinating insights into Tor's conception, early, unseen sketches, and beautiful animation art by the man who created the noble savage, Joe Kubert.