Bizarro Back Issues: The Mystery Of Santa's Brother! (1951)
The weird thing about Santa Mythology is that while we're all pretty solid on what he does now --- you know, the North Pole, the elves, the sleigh and the toys, all that good stuff --- the origin story is a lot harder to pin down. I suspect this has a lot to do with the fact that our modern idea of Santa Claus has been cobbled together from sources as disparate as a the life of a 4th-century saint, an advertising campaign for Coca-Cola, the stories of Thor's dad, and a series of stop-motion animated specials, but still. It leaves a lot up in the air. Which is how you end up with stuff like "Santa's First Christmas Trip," in which we get an origin for the jolly old saint that takes the basic premise of "hefty toymaker delivers his wares to children" and goes right off the rails to banditry, frostbite, and the unanswered mystery of Santa's little brother.