The Pieta was engraved by Giulio Bonasoni and Tudius Bononiensis (date 1546), exactly as Condivi describes it.

The Crucifixion survives in a great number of pencil-drawings, together with one or two pictures painted by men like Venusti, and many early engravings of the drawings.

One sketch in the Taylor Museum at Oxford is generally supposed to represent the original designed for Vittoria.
II What remains of the correspondence between Michelangelo and the Marchioness opens with a letter referring to their interchange of sonnets and drawings.

It is dated Rome, 1545.

Vittoria had evidently sent him poems, and he wishes to make her a return in kind: "I desired, lady, before I accepted the things which your ladyship has often expressed the will to give me--I desired to produce something for you with my own hand, in order to be as little as possible unworthy of this kindness.