Derbyshire 50sw, 6". Derby, northeast, 1919/1910 (sic), black outline, red geology.
Derbyshire 50sw, 6". Derby, northeast, 1919/1910 (sic), black outline, red geology. In good condition.
About the England Six Inch County Series (later edition)
These early 20th century geological maps are at 1:10,560 scale, based on county layout. Each sheet covers 2 x 3 miles in considerable detail.