Whitmore appeared as General Oliver O. Howard in the 1975 television film I Will Fight No More Forever, based on the 1877 conflict between the United States Army and the Nez Percé tribe, led by Chief Joseph. In 1979, Whitmore hosted a talk show of 22 episodes called simply Comeback. One of those segments focuses on the helicopter inventor Igor Sikorsky. In 1980 he starred as Borski, a therapist treating imprisoned sex-offenders, in the made-for-television movie Rage! directed by William A. Graham. In 1980, Whitmore appeared as Jake Reeves the terminally ill father of coach Reeves in a two episode arc of the television series White Shadow. In 1986, Whitmore voiced Mark Twain in the first claymation feature film The Adventures of Mark Twain.
Whitmore appeared as General Oliver O. Howard in the 1975 television film I Will Fight No More Forever, based on the 1877 conflict between the United States Army and the Nez Percé tribe, led by Chief Joseph. In 1979, Whitmore hosted a talk show of 22 episodes called simply Comeback. One of those segments focuses on the helicopter inventor Igor Sikorsky. In 1980 he starred as Borski, a therapist treating imprisoned sex-offenders, in the made-for-television movie Rage! directed by William A. Graham. In 1980, Whitmore appeared as Jake Reeves the terminally ill father of coach Reeves in a two episode arc of the television series White Shadow. In 1986, Whitmore voiced Mark Twain in the first claymation feature film The Adventures of Mark Twain.