A couple of maps showing the routes of Scottish Missionary, David Livingston, as he searched for the source of the Nile river. Because of his explorations he was a popular hero in the late 19th century, and because of his fame, he was influential in ending the East African Arab-Swahili slave trade.
East African Routes of Dr. Livingston, 1872
Central African Routes of Dr. Livingstone, 1875