1981
1:100k
1901
C&GS
1:80k
1908
C&GS
1:80k
1914
United Kingdom Hydrographic Office
1914
United Kingdom Hydrographic Office
1980
US Geological Survey
1:24k
1861
United Kingdom Hydrographic Office
1910
C&GS
1:80k
1899
C&GS
1:80k
1986
US Geological Survey
1:24k