Cary Elwes

Character: John P. Jones (voice)

Sam Elliott

Character: Ward Hill Lamon (voice)

Neal McDonough

Character: Charles Sumner (voice)

Dermot Mulroney

Character: Andrew Curtin (voice)

Matthew Broderick

Character: Reader

William Fichtner

Character: John G. Nicolay (voice)

Michael C. Hall

Character: Leonard Swett (voice)

Keith David

Character: Frederick Douglass (voice)

David Morse

Character: Abraham Lincoln (voice)

Aidan Quinn

Character: Theodore Parker (voice)

Gary Busey

Character: John C. Calhoun (voice)

David Strathairn

Character: Ralph Waldo Emerson (voice)

Jason Alexander

Character: Noah Brooks (voice)

Ed Asner

Character: Edward Everett (voice)

Lili Taylor

Character: Emily Souder (voice)

Victor Garber

Character: William Saunders (voice)

Bob Gunton

Character: William Herndon (voice)

Zachary Gordon

Character: Daniel Skelly (voice)

Kelly Ayotte

Character: Senator (NH)

George Takei

Character: Self

Lois Smith

Character: Elizabeth Crawford (voice)

Kevin Conway

Character: Daniel Webster (voice)

Maxwell Perry Cotton

Character: Albertus McCreery (voice)

Tom Brokaw

Character: Self

Henry Louis Gates, Jr.

Character: Self

Laura Bush

Character: Self