1948
Portugal. Ministério das Colónias; Portugal. Junta de Investigações Coloniais
1:2m
1800
1931
Mining and Industrial Publications of Africa
1:3m
1800
Johannes en Gerard van Keulen;Ioan Heyteman;Iohn Heyteman;Joannes van Keulen;Iohn of Keulen;Iean van Keulen;Iohannis van Keulen;Ioannes van Keulen;G. v. Keulen;G: v: Keulen;Gerard van Keulen;Jean van Keulen;Pieter Goos;Iohannes van Kuelen;Pierre Mortier;Hadriano Relando;Iacob Lootsman
1918
Unspecified
1:1m
1948
Portugal. Ministério das Colónias; Portugal. Junta de Investigações Coloniais
1:2m
1918
Unspecified
1:1m
1827
Vandermaelen, Philippe, 1795-1869
1:2m
1918
War Office, Geographical Section
1:2m
1918
S.A. Topographical Section, Cartographer
1:1m