Nigeria and Cameroon, 1960 Published March 10, 2016 at 1600 × 1200 in Cameroons — 1948 Note the bright pink line near the Nigeria-Cameroon border demarking the boundary of British Cameroons. A portion of: Africa. Scale approximately 1:25,000,000. [Indianapolis : George F. Cram, 1960.] Map Library call number: G8200 1960 .G4