3 partbooks of a set originally of 4 - Bassus now missing. Copied in Florence; probably owned by Giuliano de' Medici (RedmS). S & Ct partbooks acquired by the Biblioteca de Cortona in 1879; T partbook bought by Bibliothèque nationale de Paris in 1866, in sale of effects of the antiquary, silk manufacturer & diplomat Nicolas Yemeniz of Lyons.