Before there was Superman or Batman, before Ray Bradbury or Harlan Ellison ever picked up a pen, before there were science-fiction fans and conventions, there was Julius Schwartz -- a man who would have an indelible effect on all this and more. One of the inventors of science-fiction fandom in the thirties and publisher of the first SF "fanzine" (one of its early subscribers was Superman's cocreator Jerry Siegel), Julius Schwartz became the...