Yorkshire 247 se. Thornhill. Surveyed 1932, issued 1948.
Yorkshire 247 se. Thornhill. Surveyed 1932, issued 1948. Outline geology in black on grey basemap with red contours. National grid information in red. A property outlined in red pencil. Punched holes in left margin. 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.