When you used to call the Nintendo Power Line as a kid, you'd have been excused for thinking you were talking to some kind of gaming master, a person with such an innate knowledge of the game in question they could tell you anything you needed to know.
Sometimes, they might have been, but for the most part they were just human. And humans need help.
Game Counselors on the line had access to the world's earliest version of GameFAQs, these binders which contained maps and tips on how to complete old Nintendo games.
It's a fascinating collection of material, some pieces looking "official", some pulled directly from the pages of magazines, others like they were drawn hastily by some kid in the middle of playing. Which they may well have been.
Nintendo Game Counselor Binders 1 [portnoyd, via GameSniped]