Detective Greg Medavoy: Biography of the actor and of his character on NYPD Blue.
IMDb: Gordon Clapp (I): Filmography and trivia.
Linda Hamilton Online: Interview examining his appearance in the movie, 'Skeletons in the Closet'.
Mr. KABC: Gordon Clapp: Autographed picture of the actor.
WCHS-TV8: Gordon Clapp: Biography of the actor.