Northrop, H.D. 1889.
Wonders of the tropics, or, Explorations and adventures of Henry M. Stanley and other world renowned travelers : including Livingstone, Baker, Cameron, Speke, Emin Pasha, Du Chaillu, Andersson, etc., etc., containing thrilling accounts of famous expeditions … the whole comprising a vast treasury of all that is marvelous and wonderful in the dark continent. Chicago Ill. and Philadelphoa Pa, L.P. Miller & Co.