The final room you enter in the queue for Backstage Magic with Mickey Mouse - the meet and greet in the Town Square Theater - is a mail room.
There are slots for Mickey, Minnie, and things like props, costuming, etc. All very in keeping with the theming of this as the "offices" space for Magician Mickey Mouse.
But there is *one* mail slot different from the others. Take a closer look?
B. Justice is surely short for Bill Justice, an animator from way back when (starting with Fantasia, up to Peter Pan) who moved on to become an engineer at WDI, programming the animatronics for Pirates, Mansion, and others.
There are no other names here in the mail room, so it's just Bill getting the call out!
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Kevin Yee is the author of numerous independent Disney books, including the popular Walt Disney World Earbook series and Walt Disney World Hidden History.