William R. Fox, Bacon's large-print map of Egyptian Sûdan, 1:2,217,600, London, c.1885. Size of the original: 48 x 72 cm. Photograph courtesy of the Société de Géographie (BNF, Cartes et Plans SGY F-42).

William R. Fox, Bacon’s large-print map of Egyptian Sûdan, 1:2,217,600, London, c.1885. Size of the original: 48 x 72 cm. Photograph courtesy of the Société de Géographie (BNF, Cartes et Plans SGY F-42).