Swan/Adams cover; 1st Supergirl solo book
Swan was a house artist at DC working on titles like Tommy Tomorrow, he began gravitating towards Superman and his related books, Superboy, World's Finest and Jimmy Olsen, he would eventually leave DC thanks to his personality issue with Editor In Chief Mort Weisinger. He would eventually return and go on to be the artist that defined the look of Superman in the Silver Age, eventually becoming the editor of the title, but after thirty years of keeping up standards of all things Superman, Swan was given the boot in favor of John Byrne's Superman reboot, Swan's comic work began to taper off after this dismissal and he eventually retired, but will forever be recognized as the Silver Age Superman's finest artist.
Jack Abel was an American comic book artist best known as an inker for leading publishers DC Comics and Marvel Comics. He was DC's primary inker on the Superman titles in the late 1960s and early 1970s, and inked penciler Herb Trimpe's introduction of the popular superhero Wolverine in The Incredible Hulk #181. He sometimes used the pseudonym Gary Michaels.