
1927
1:2m

1950
Craste, L.

1894
ALIS, Harry pseud. [i.e. Jules Hippolyte Percher.]

1827
Vandermaelen, Philippe, 1795-1869
1:2m

1890
C.L. Keller
1:4m

1893
Morgen, Curt von.

1905
Scobel, Albert
1:4m

1952
Willinks Commission

1907
Great Britain. General Staff. Topographical Section.

1960
Federal Surveys, Nigeria (Revision)
1:1m