Betty Schade
— Mrs. Kate Adams Keller (Act 1)
Roy Stewart
— Captain Keller
Tula Belle
— Nadja (Act 1)
Edythe Chapman
— Sarah Fuller
James Dunn
— Life Saver
Helen Keller
— Herself (Act 3)
Anne Sullivan
— Herself (Act 3)
Ardita Mellinino
— Nadja (Act 3)
Mrs. Kate Keller
— Herself (Act 3)
Phillips Keller
— Himself (Act 3)
Etna Ross
— Little Blind Helen (Act 1)
Edith Lyle
— Anne Sullivan (Acts 1 & 2)
Ann Mason
— Helen Keller (Act 2)
Flora Braidwood
— Nadja (Act 2)
Elmo Lincoln
— Ignorance
Herbert Heyes
— Ulysses (Act 2)