1827
Vandermaelen, Philippe, 1795-1869
1:2m
1945
Great Britain. Inter-service Topographical Dept.
1897
SOMMERVILLE, Maxwell.
1864
MOUHOT, Alexandre Henri.
1965
The Associated Press
1929
Royal Survey Department
1:1m
1954
St. Louis Post dispatch
1900
Larousse
1945
Perceval
1893
DEVILLE, Victor.