Narrator (voice)

Pierre Curie (voice)

Anthony Thompson (voice)

Santos-Dumont (voice)

Huron (voice)

Giovanni Francesco Sagredo (voice)

Von Steuben / Gates / Howe / Parker (voice)

Martha Washington (voice)

Giovanni / Domineco Columbus (voice)

Charles Lee (voice)

Louis Pasteur (voice)

Michelangelo (voice)

Verrochio / Duke of Florence / Peasant (voice)

Joan of Arc (voice)

Wladyslaw Sklodowski (voice)

Arthur Keller (voice)

Large Quaker (Voice)

Lipton / Reporter #1 (voice)

Christopher Columbus (voice)

Pinzon (voice)

Bosco (voice)