Giorgio Vasari, Lives of the Most Excellent Painters… (1850)
“ The colouring, moreover, has maintained its freshness exceedingly well, and there are many portraits of renowned and learned, or otherwise distinguished men, among which that of Messer Francesco Petrarca may be found. In the works of this Hall, the Bolognese painter, Jacopo Avanzi, took part with Aldigieri: beneath the above-named pictures, and, like them, in fresco, he painted two very beautiful triumphal processions, executed in so good a manner, and with such consummate art, that Mantegna, as we are assured by Girolamo Campagnuola, commended them as pictures of extraordinary beauty. ”
