Jonathan Harris - Master of Entertainment:The definitive Jonathan Harris site - features current news and information, photo album, sound and video clips, articles/interviews, and discussion board.
Giants Log Interview: Conducted by David Simpson and Jenny Lovering.
Internet Movie Database: Filmography, trivia and other details.
Megaera's Actor Reviews: Critical evaluation of Harris' role on "Lost In Space", includes biographical details.
Orlando MegaCon: Interview transcript.
Sci-Fi.com: Jonathan Harris Chat: The voice actor discloses that he changed the character of snarly villain Dr. Smith in Lost In Space to a charmingly delicious man.