Memoirs of a Woman of Pleasure (Fanny Hill)

This is the title where the reprint question matters most: the census is right that unexpurgated eighteenth-century printings are vanishingly rare and that virtually everything in circulation is a modern reprint. Any copy with an ISBN, a dust jacket, perfect binding, or a twentieth-century publisher's imprint is modern regardless of what the title-page date claims. Eighteenth-century piracies also exist and are genuinely old but are not the first — copies dated 1781, for example, are recorded and offered as early editions rather than firsts. Because the book was clandestine from the outset, treat any 'G. Fenton 1749' title-page with suspicion until the text at the homosexual-encounter passage and the physical make-up have both been examined.