16767; download computer of 25 June 1561, Ferrari to Cosimo I, MdP 3108, fo. 16537; and information of 21 May 1561, Ferrari in Milan to Cosimo, MdP 3108, fo. 4 February 1563, Cosimo I to Piccolomini in Ferrara, MdP 219, fo. firms when he called with them.