This is a beautiful c.1760 map of the coast of French Guyana and the Island of Cayenne by Isaak Tirion. It covers from River Kourou south as far as River Kaw (Cau) and River Orapu. A large inset in the upper right quadrant features the fortifications of Cayenne, including Fort Ceperou. Throughout, the map notes rivers, important towns, landmarks coastal features and beautifully rendered topography. The region was first discovered by Spanish explorers and colonized by the French first in…