Keith David
Narrator (voice)
Kevin Conway
Mark Twain (voice)
Blythe Danner
Olivia "Livy" Langdon Clemens (voice)
Philip Bosco
(voice)
T
Tim Clark
(voice)
Carolyn McCormick
(voice)
Amy Madigan
(voice)
Cynthia Nixon
(voice)
J
John Boyer
Self (uncredited)
J
Jocelyn Chadwick
Self (uncredited)
S
Shelly Fisher Fishkin
Self (uncredited)
Dick Gregory
Self (uncredited)
Hal Holbrook
Self (uncredited)
Arthur Miller
Self (uncredited)
Chuck Jones
Self (uncredited)
R
Ron Powers
Self (uncredited)
L
Laura Skandera-Trombley
Self (uncredited)
William Styron
Self (uncredited)