Kongo (mto)
1899: Joseph Conrad's Heart of Darkness is a short novel   about Charles Marlow's life as an ivory transporter down the Congo River in Central Africa.  The river is "a mighty big river, that you could see on the map, resembling an immense snake uncoiled, with its head in the sea, its body at rest curving afar over a vast country, and its tail lost in the depths of the land".