Internet Movie Database
Filmography (with over 150 credits), trivia and other details.
The Official Daws Butler Website
Joe K. Bevilacqua's tribute to the character voice actor. Features a "Listening Room", photo archive, biography, and an article by the author entitled "A Portrait of My Mentor" on Daws that covers the entire gamut of voice acting and includes many rare photos and sound clips.
The Warner Bros Cartoon Companion
Daws Butler's entry from E.O. Costello's companion. Contains a brief biography and filmography.
TV Party - Video Vault
Archived collection of rare television commercials and includes other facts, screen captures and trivia. [Real Video plugin required]