Board Thread:General Discussion/@comment-1916997-20150312220054/@comment-25926288-20150506205042

Utter solitude wrote: Well, we already know that many citizens of the Enchanted Forest are quite knowledgeable about the other magical worlds...

I mean, Regina is a queen, and smart enough to know that knowledge is power. I'm sure she has networks that give her access to all kinds of knowledge. Just because we don't see it doesn't mean it's not there. Well, that's somewhat disputable. Snow White was a princess, bandit, and then a queen and she didn't here about Camelot or Oz, etc. I think only a few are knowledgeable of other worlds, like it was an ancient thing to use magic beans to traverse and conquer other lands (which could explain how worlds like Wonderland were populated....

We can't assume they know of other worlds when most don't seem to be aware. It's probably a magic person or sage's knowledge to find out about it. Or rumors spread.