12mo. Volume I: Dialogues des Dieux; viii, 383 pp., steel engraved frontispiece, engraved vignette on title page / Volume II: Lettres Galante et Philosophiques; ii, 399 pp., steel engraved frontispiece, engraved vignette on title page / Volume III: Lettres Philosophiques; [2], 260 pp., steel engraved frontispiece, engraved vignette on title page, contemporary full calf, rubbed, hinges weak, lower part of volume III spine missing, marbled endpapers & outer edges, book plate verso front cover of volume one, Pierre Mortier, Amsterdam, 1744.