Complex sentence: Wilson D. "Pete" Burness (June 16,1904--July 1969) was an American animator and animation director best known for his work on the Mr. Magoo series.
Split into simpler sentences: Wilson D. "Pete" Burness (June 16,1904--July 1969) was an American animator and animation director. He was perhaps best known for his work on the Mr. Magoo series.