Circa 500 manuscript and printed documents relating to military and political events in France, 1740s-1780s, and the military career of François-Gaston, duc de Lévis, including correspondence, diaries, maps, drawings, and other military and legal documents. Papers relate to Lévis's defense of Provence during the War of the Austrian Succession, 1748, and the ambassadorship of his cousin, Gaston Charles Pierre de Lévis, duc de Mirepoix, in London, 1749-1753; Lévis's participation in the French campaign in Germany during the Seven Years' War, 1762; construction of a canal between Saint-Omer and Aire, and other waterways in Artois, during Lévis's governorship of Artois, 1765-1780; and the court-martial of Jean-Joseph Carrier de Montieu and Louis de Cassier de Bellegarde for mismanagement of arms manufacture and inspection, for which Lévis served on the court, 1773.