It has even been suggested that Vasari knew more about the disappearance of his predecessor's masterpiece than he has chosen to relate.

Lionardo's Cartoon has also disappeared, and we know the Battle of Anghiari only by Edelinck's engraving from a drawing of Rubens, and by some doubtful sketches.
The same fate was in store for Michelangelo's Cartoon.

All that remains to us of that great work is the chiaroscuro transcript at Holkham, a sketch for the whole composition in the Albertina Gallery at Vienna, which differs in some important details from the Holkham group, several interesting pen-and-chalk drawings by Michelangelo's own hand, also in the Albertina Collection, and a line-engraving by Marcantonio Raimondi, commonly known as "Les Grimpeurs." We do not know at what exact time Michelangelo finished his Cartoon in 1506.

He left it, says Condivi, in the Sala del Papa.

Afterwards it must have been transferred to the Sala del Gran Consiglio; for Albertini, in his _Memoriale_, or Guide-Book to Florence, printed in 1510, speaks of both "the works of Lionardo da Vinci and the designs of Michelangelo" as then existing in that hall.