Yorkshire 233 nw. Black Gates. Surveyed 1930, issued 1935.
Yorkshire 233 nw. Black Gates. Surveyed 1930, issued 1935. Outline geology in blue on black basemap with red contours. 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.