Scale in French sea leagues., From: Histoire Generale Des Voyages, ou, Nouvelle Collection de Toutes Les Relations de Voyages par mer et par terre; Abbé Prévost, and John Green [Paris: Didot, 1747-1780]., Printed beneath map frame: "Tome IV in 4o. No. 15" (lower left) and "Tome 3 in 8o. Page 368"(lower right)., Relief shown pictorially., Inland map depicts kingdoms of Central Africa with rivers & mountain ranges and two areas of silver mines in the Botswana region (Royaume d'Abutua ou Toroa and Royaume de Chicova)., Restored and hinged between acid-free boards.