These topographic city plans of Bathurst (now Banjul) were published in 1966 by the Directorate of Overseas Surveys in the United Kingdom.
Bathurst CK 2688 
Bathurst CK 2888 
Bathurst CK 2687 
Bathurst CK 2887 
Bathurst CK 2886
Additional maps of Gambia can be downloaded from TROPICARTA (requires Chomikuj account).