See above, p. [103], for what has been said about Verocchio's "David."
A drawing made in red chalk for this "Dream of Constantine" has been published in facsimile by Ottley, in his Italian School of Design. He wrongly attributes it, however, to Giorgione, and calls it a "Subject Unknown."
The one in S. Francesco at Rimini, the other in the Uffizzi.