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Sheet 7 drift, Old Series 1". London and northwest, 1871, first drift edition, base map 1822.

Sheet 7 drift, Old Series 1". London and northwest, 1871, first drift edition, base map 1822.

Geological Survey of England and Wales

Sheet    7 drift, Old Series 1". London and northwest, 1871, first drift edition, base map 1822. Hand-coloured engraving. Covers St. Albans, Princes Risborough, Medmenham, Maidenhead, Windsor. Flat, 63 x 94cm, Flat, closely trimmed with loss of title on top edge. Clean, bright colours. In very good condition but rated fair to good due to trimming.