65th Academy Awards
There was a minor controversy when Snow White (Disney character) was presenting an award for Best Animated Short Subject. She was voiced by Mary Kay Bergman, Adriana Caselotti, the original voice of Snow White was not aware of this. She was reportedly offended that Disney didn't ask her to voice Snow White during the ceremony.
The Mickey Mouse Theater of the Air
Walt Disney did the voice of Mickey Mouse for the first three episodes. Starting with the fourth episode, Mickey was voiced by comedian Joe Twerp. Disney appeared as himself in some early episodes. In later episodes, Disney was too busy to attend performances, and he was impersonated by announcer John Hiestand. Radio actor J. Donald Wilson provided the voice for one episode.