I think the Ology book series could def be cannonical to Gravity Falls and vice versa (assuming that the Ology books take place in the same cannon, which they do in my heart of hearts)
Im back deep DEEP in a GF interest yet again and i finally got my hands on the 3rd Journal and even The Book Of Bill (which i will read after my first read through of J3) and it reads out EXACTLY like someone was dropped into the ology world with no knowledge of ology books. Ford is a wizard(ologist) with no manual!
Imagine Dipper and Mabel growing up with the ology books like dragonology and egyptology and all that - plenty in them for both of their interests! And THEN they move to gravity falls. Hell! Could be a background reason of why theyre able to yes-and everything so well!
I dunno, my coffee hasnt kicked in yet and im bouncing off the walls already
