SILHON (Jean de). Esclaircissement de quelques difficultez touchant l'Administration du Cardinal Mazarin, Paris, de l'Imprimerie Royale, 1650, 2 books in 1 vol. in-folio, supple gilt vellum, marbled edges (period binding). First edition printed by the Imprimerie Royale. First part only published. An important work that was highly influential in its day. "Silhon's book is coldly written, but not without a certain skill. It should be noted, moreover, that he had the full assent of Cardinal Mazarin". (Moreau). A fine copy with large margins, printed with great care by the Imprimerie Royale. This copy includes the cardboard box mentioned by Moreau. (Some contemporary annotations and foxing on the title page).