[2] Cozio's meticulous notes on nearly every instrument that passed through his hands contributed enormously to the body of knowledge surrounding Italian violinmaking.

[4] The Count's aristocratic status formally prohibited him from direct buying and selling of instruments, so much of his business correspondence was carried out through intermediaries.

[7] Following the deterioration of his relationship with Guadagnini, the primary figures in the expansion of Cozio's expertise and treasury of violins were the Mantegazza brothers, Domenico and Pietro Giovanni.

[8] Carlo Mantegazza, son of Pietro, is frequently mentioned in the Carteggio as an unsurpassed restorer and modernizer of Cozio's historic instruments, including the unfinished stock of G.B.

[9] Finally, the prominent violin collector Luigi Tarisio occupies a central role in the history of Cozio's famous collection of instruments.