BOYLE, Robert (1627-1691). A Free Discourse Against Customary Swearing and a Dissuasive from Cursing. London: Thomas Cockerill, 1695. 8°. Engraved portrait of the author by Robert White, 2-page publisher's advertisements (occasional light spotting). 18th-century English blue morocco, gilt floral border with crown motif, spine in six compartments, lettered in one, the remainder tooled in gilt, one with the crowned initial of the Earl of Orrery, gilt turn-ins and edges. FIRST EDITION. Wing B-3978; ESTC R27221; Fulton 197. Possibly the dedication copy.