[3][5] Following the near-demise of Atlas' comic-book line in 1957, and the accompanying cutbacks and firings, Keller supplemented his income by working in a car dealership in his home town.

He also continued to draw for Charlton, where his last known comics work was the cover and the accompanying eight-page story "The Rescuers" in the combat title Attack #14 (Nov.

[6]Keller returned to selling cars at Marshall Chevrolet in Reading, Pennsylvania[1] and later was a part-time salesperson for Fun Stuff Hobbies and for Kiddie Kar Kollectibles.

[1][4] Cartoonist and columnist Fred Hembeck wrote that, Jack's art had a pleasing crispness to it, and sorta reminded me of a stripped-down John Severin.

And yet, while the others may've taken on all sorts of assignments — horror, war, western, superhero — I never saw Jack anywhere but within the pages of the [Kid Colt] comic, certainly not cavorting in the nascent Marvel Universe of gods and godlike characters.