Here's a breakdown:
* Original Winnie the Pooh books: Eeyore's voice was *written* by A.A. Milne, but not voiced by anyone in particular as the books are simply written words.
* Disney's Winnie the Pooh: Christopher Robin Milne provided the voice of Eeyore in the early Disney shorts and films. He also voiced the character in the 1977 special "Winnie the Pooh and a Day for Eeyore".
* Later Disney films and specials: The voice of Eeyore has been provided by different actors over the years, with Sterling Holloway being the most famous and recognizable voice for Eeyore.
It's important to note that the voice of Eeyore in the original books and Milne's voice in the Disney films are distinct, and each has its own charm.