Contains handwritten letters on paper, many of which are partially or entirely in code. The letters are written to Pope Gregory XIV and his brother, Paolo Sfondrati, and relate to the family's political and Catholic Church relationships in Italy and Spain.

Contains letters written and received by Sfondrati during his service as ambassador to the Duke of Savoy. Among his correspondents were Carlo d'Aragona Tagliavia, governor of Milan, and François de Vergy, governor of Burgundy. Materials focus on relationship between Spanish holdings and Savoy, and date from between 1581 and 1584.

Contains letters addressed to Paolo Sfondrati. The missives are largely concerned with personal and Church matters, including the Council of Trent.

2 seals, 1 from the State of Pennsylvania and 1 from the Secretary’s Office of PA; also a card with a picture that says “Virtue, Liberty, and Independence,” all in an envelope from the State of Pennsylvania, Office of the Secretary of the Commonwealth, to Thomas, postmarked from Harrisburg. Date of production not identified.

The following is written on the item: “3 sides of the old iron seal left by Grandfather Gray to G.G. Leiper,” written in Thomas L. Kane’s handwritting, has three wax seals on the page. Date of production not identified.