LS/549.09424 Oversize
Minerals of the English Midlands.
2018
Derbyshire Record Office
LS/622 Oversize
Gregory Mine: photostat copies of plans.
nd
LS/File 622.344
Gregory Mine and Cockwell Sough
1953
LS/MAP/C21377014
A plan of the several mines and veins of lead ore in the Lordship of Ashover.
1801
LS/MAP/C21377022
Section of the strata at Gregory's Mine, Ashover, Derbyshire: June 26 1801.
Florence Nightingale