1882
Linant de Bellefonds, Louis Maurice Adolphe
1879
HOSKIÆR, Otto Valdemar von.
1901
Great Britain. War Office. Intelligence Division.
1942
Great Britain. Army. Royal Engineers. Field Survey Company, 512th.
1924
Great Britain. Ordnance Survey.
1802
1856
A. Fullarton
1930
Nicohosoff, Alexander
1:15k
1950
Calivis, Edmund
1:15k
1806
BROWNE, William George.