1751. Map of a graphite mining region in the vicinity of Seathwaite ("Seawhaite"), in the North Western Fells in the Lake District. Coverage area include... E. Cave.
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1933. United States. Bureau of Chemistry and Soils. Relief shown by contours and spot heights. "Contour interval 10 and 20 feet." "Mark Baldwin, Inspector, District 1. Soils surveyed by J.O. Veatch, ...