Adriana Caselotti
Adriana Caselotti (May 6, 1916 – January 18, 1997) was an American actress, voice actress and singer. Caselotti was the voice of the title character of the first Walt Disney animated feature "Snow White and the Seven Dwarfs", for which she was named as a Disney Legend in 1994, making her the first female voice actor so named.
Purv Pullen
He began performing as a voice actor in films in the 1930s. He was the voice of Cheetah in Tarzan films and produced the bird sounds in Disney's "Snow White and the Seven Dwarfs" (1937). Pullen's vocal contributions appear in many cartoons featuring Mickey Mouse, Betty Boop, and Popeye. Pullen was also the voice of the howling coyote in Cecil B. DeMille's "The Crusaders", and the squawks and jungle sounds for Martin Denny's "Quiet Village".