User blog comment:PurplePenguin/The Grunkle Stan Mystery/@comment-24.98.222.98-20120906232558

I doubt he wrote the book because if you look at the trivia page it appears he has hidden motives ex1. the flavor pup that spoke gibbersih in the incoveinincing said dont trust grunkle in revers ex.2 the ending of gravity falls theme song says stan is not what he seems in reverse ex3.the new them song ending says switch A and Z with that I believe that do to the fact that grunkle hates gideon thet gideon could be a good guy but this is just a guess. Here is a lit of characters that could be the maker of the book(s)

That crazy guy aka mc guket(most logical because he made a creature form the book and might act crazy to cover it up)

Gideon lazy susan could have something to do with it because in the theme end it says witch A and Z and she is the only character with a z in her name.

now looking at the lowest comment   13256 if 3 letter back it gives you 2 so that could mean the whoever poosesses book to might could have known about it.

The only person who has potential to know was blandin blendin because he is a time traveler and thus could go back in the past and find out who made the book

ill be back if i can find more info. Also watch out for clones 3 and 4