With all due respect, please stop undoing my edits on the Mickey Mouse page.
Mickey's voice actor info was inaccurate, just like on Wikipedia. The fact is that Walt Disney officially voiced Mickey from 1928 to 1966. Even though Walt stopped voicing Mickey regularly after 1947 with Jimmy MacDonald taking over the role, Walt continued to reprise the role on a number of occasions (not just on The Mickey Mouse Club) up until his passing. The page even mentions all that, including a video on the side giving an example of one of Walt's post-1947 performances as Mickey's voice.
I hope you understand.