Cast
Spencer Tracy
Henry M. Stanley
Henry Travers
John Kingsley
William R. Dunn
Chuma
Harry Strang
Captain
Emmett Vogan
Albert
Cedric Hardwicke
Dr. David Livingstone
C. Montague Shaw
Sir Oliver French
Paul Harvey
Colonel Grimes
Frank Dae
Commissioner
Joseph Crehan
Morehead
Richard Greene
Gareth Tyce
Anthony Marsh
Messenger
Walter Brennan
Jeff Slocum
Bobby Burns
Geographical Society Delegate
Harry Harvey
Newspaperman at Water Barrel
Henry Hull
James Gordon Bennett, Jr.
Russell Hicks
Commissioner
Darby Jones
Chewing Native
Charles Coburn
Lord Tyce
Brandon Hurst
Sir Henry Forrester
Everett Brown
Bongo
Robert Middlemass
Carmichael
Frank Orth
Newspaperman with Pills
Nancy Kelly
Eve Kingsley
David Torrence
Mr. Cranston
Vernon Dent
Newspaperman in Office
Frank Jaquet
Senator
Miles Mander
Sir John Gresham
Holmes Herbert
Frederick Holcomb