The "Lost Appa" posters Aang, Katara and Sokka hang up around Ba Sing Sey read "Have you seen my flying bison? His name is Appa. He has six legs and weighs ten tons. If you have any information, please contact Avatar Aang in the Upper Ring, 96th District, House #217."
Sokka is shown to be left-handed while attempting to draw Appa's posters.
The Lost Appa posters say Aang is staying in House 217. This is season 2, episode 17.
The name Joo Dee means "local" in Mandarin, with the characters individually translating to "bureau" and "earth."