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Burnett Mattinson (May 13, 1935 – February 27, 2023) was an American animator, director, producer, and story artist for Walt Disney Animation Studios, where he was employed from 1953 until his death in 2023. Mattinson was honored as an inductee of the Disney Legends program in 2008. Mattinson was the longest serving employee of The Walt Disney Company, with a career that spanned seven decades. Wikipedia