Suffice it to say that Amy Schneider, the transgender "Jeopardy" champion a few seasons back, had a tattoo of Princess Ozma, one of the book's key characters, on her arm. My own favorite Oz book ...

The evil witch Mombi and the self-styled girl General Ginger have seized power in the Emerald City of Oz. The Scarecrow ... ruler of the Emerald City, Ozma, and fights for justice.