Gallicanism and ultramontanism in Catholic Europe in the 18th century

Includes original letters, writings, and other documents, mostly in manuscript, produced by the Utrecht archbishops, other Dutch Jansenists and by hundreds of foreign correspondents, both major and minor figures of the Jansenist movement, its sympathizers and opponents from the early 18th century until the early 19th. Much of the correspondence emanates from abroad, especially France and the southern Netherlands (Belgium), but also from Italy, and some from Jansenists living in exile in the Dutch Republic.