[Scandia]

I interpreted the Dorothy clicking her slippers 3 times one simply as referring to the ruby.

So my first guess was AOPi because the ruby is their one and only jewel. ASA also has the pearl.

Never made the Kansas connection. Nor even the 3 letter one- though due to other clues, I had narrowed it down to 2 orgs that had 3 letters. Just the ruby one.