BORLASE, William. Observations on the Antiquities Historical and Monumental, of the County of Cornwall. Oxford: W. Jackson, 1754. First edition, folio (353 x 215mm.) 23 engraved plates (1 folding), 10 engraved illustrations, 1 map, extra-illustrated with a fragment of a manuscript letter by William Borlase. (Some spotting to first and last few leaves, occasional other spotting, pp.77-80 torn and repaired.) Contemporary calf the covers tooled in blind with a centrally placed armorial (rebacked, old spine laid down, extremities slightly rubbed and scuffed). Provenance: Egerton, Earl of Bridgewater (binding); thence by descent (armorial bookplate); J.H.I. Lawrence of Launceston (signature to bookplate).