Anglo-American explorer and journalist Sir Henry Morton Stanley explored much of the central African continent in the mid and late-1800s. In 1869 the New York Herald sent Stanley to search for Dr. David Livingstone, a famous physician and missionary who had been working in the African interior. In addition to finding Livingstone, Stanley spent years traveling through Africa, becoming the first European to descend the length of the Congo River and only the second European to cross central Africa. Stanley is also generally credited with confirming Uganda’s Lake Victoria as the source of the Nile River.