The COMPLETE Jack Kirby run of Challengers of the Unknown. These issues were published between 1956 and 1959, and can be seen as somewhat of a prototype of The Fantastic Four. THe printing in this volume is crisp and clear, and the colors are bright, on flat (NOT glossy, thankfully) white paper.
Added Bonus: Issues #4 through #8 are inked by Wallace "Wally" Wood.
'Nuff said.