Marvel Masterworks volume 18 is a collection of issues ##83-100 of the Journey Into Mystery title which featured the early Thor stories published prior to Thor getting his own solo title later on.  This volume features 1st appearances of Thor and Loki (among many others!).  The Marvel Masterworks series, which began in 1987, celebrates the early issues of the classic stories in a beautiful, collected editions.  This book is in LIKE NEW, pristine condition, still sealed in its wrap from the printer.  It is a first printing.