Letter of Cardinal Maurizio di Savoia to his father, Duke Carlo Emmanuele (July 6, 1623), about various papabili. A conversation with Cardinal Ginnasio [Adriani, 187-188].
Letter to the Duke of Savoy from his son, Cardinal Maurizio di Savoia (July 9, 1623), assessing the chances of various candidates [Adriani, 190-191].
Cardinal Maurizio to his father (July 19, 1623, the day of the Opening of the Conclave); problems with conclavists [Adriani, 192-193].