Voltaire (François Marie Arouet de) Oeuvres Completes, 100 vol., half-titles, engraved portrait with partial hand-colouring (trimmed), attractive contemporary half dark blue roan, spines gilt, boards slightly rubbed and marked, those of vol.1 worn and stained, Lyons, J.B.Delamolliere, 1791-92; another edition, 42 vol., engraved portrait, contemporary tree calf, gilt, spines gilt with green roan labels, a little rubbed, spines slightly faded, Paris, 1818-20 § Bengesco (Georges) Voltaire: Bibliographie de ses Oeuvres, 4 vol., out-of-series limited edition, portrait, some foxing, contemporary half morocco, t.e.g., others uncut, rubbed, Paris, 1882-90; and c.45 others, Voltaire, v.s. (c.190)