Hal Holbrook, Actor Who Channeled Mark Twain, Is Dead at 95 - The New York Times
Hal Holbrook - The Boston Globe
Digital Collections - Actors Hal Holbrook and Dixie Carter in a scene from the New York Shakespeare Festival production of the play "Buried Inside Extra." (New York)
Hal Holbrook Dead: Actor Who Played Twain, Lincoln and Deep Throat Was 95 – The Hollywood Reporter
Hal Holbrook, Actor Who Channeled Mark Twain, Is Dead at 95 - The New York Times
Tony Winner Hal Holbrook Shares the Pain That Led to Mark Twain | Playbill