Derbyshire 58sw, 6". Calke Park, 1901/1905, black outline, blue geology.
Derbyshire 58sw, 6". Calke Park, 1901/1905, black outline, blue geology. Includes part Leicestershire 9sw. In very 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.