It is clear the two authors knew each other, but not clear that either had read the other's work. Annotations in the MS include notes to ask Vasari for further details, and it is possible that a satirical portrait at the end of the MS records the author's bitterness when he realized that Vasari's publication would eclipse his own efforts, or had already done so.[10] Like Vasari, the author had access to a version of the material known from the somewhat earlier manuscript of Antonio Billi, from about 1515, which may have been circulated among Florentine art lovers in various redactions.[11]