|Detailed two-sheet map of West Africa|
Society for the Diffusion of Useful Knowledge.
London: SDUK, 1839. A pair of maps of West Africa, covering from Senegal top left, clockwise to Timbuctu, Lake Chad, the Bight of Benin and Nigeria, and Sierra Leone. The routes of explorers are marked as are James Rennell's infamous 'Mountains of Kong'.