Britain's short-lived Province of Senegambia (1765–1783) was part of an expansion effort in the region driven by a desire to secure access to the gum trade of the Senegal river. Drawing on Britain's knowledge of France's dealings with the Upper-Senegal region it was complemented by the adoption of French cartography, edited to illustrate a new colonial identity. It is argued here that there was an additional motive of developing closer contact with the African interior. This pre-dates the establishment of the African Association in 1788 and its subsequent and better-known expeditions to the River Niger. In contrast to the French, however, the British struggled to engage with the region. This paper approaches the topic from a perspective of cartographic history. It highlights Thomas Jeffery's map of ‘Senegambia Proper’ (1768), copied from Jean Baptiste Bourguingnon d'Anville's ’Carte Particuliére de la Côte Occidentale de l'Afrique' (1751) and illustrative of several obstacles facing both British map-making and colonial expansion in mid-eighteenth century Africa. It is argued that the later enquiries and map-making activities of the African Association, which were hoped to lead to the colonisation of West Africa, built upon these experiences of failure in Senegambia.
