Fun and Fancy Free
Disney had provided the voice for Mickey Mouse since his debut in 1928, and "Fun and Fancy Free" was the last time he would voice the role regularly, as he no longer had the time or energy to do so. Disney recorded most of Mickey's dialogue in the spring and summer of 1941. Sound effects artist Jimmy MacDonald would become the character's new voice actor, starting in 1948. Disney, however, did reprise the role for the introduction to the original 1955–59 run of "The Mickey Mouse Club".
Mickey's Christmas Carol
This was the first original Mickey Mouse theatrical cartoon produced in over 30 years. With the exception of re-releases, Mickey had not appeared in movie theaters since the short film "The Simple Things" (1953). Many additional characters seen in the film had also not appeared in a theatrical cartoon for several decades. The film was also the last time in which Clarence Nash voiced Donald Duck. Nash was the only original voice actor in the film as Walt Disney (Mickey Mouse) and Pinto Colvig (Goofy) had died in the 1960s, Cliff Edwards (Jiminy Cricket) and Billy Gilbert (Willie the Giant) in 1971, and Billy Bletcher (Pete and the Big Bad Wolf) in 1979. It was also the first time in animation that Scrooge McDuck (as Ebenezer Scrooge) was voiced by actor Alan Young (who had first voiced the character on the musical album); Young would continue to be the primary voice actor for McDuck until the actor's death in 2016.