Portrait of a Man with a Book
It shows a man in a black coat and black cap three-quarter-length against a wooded background , reading from a tiny book held in his right hand , argued by Roberto Longhi to be a book of hours and by others such as Muzzi to be a "Petrarchino" ( ie a miniature edition of Petrarch's "Il Canzoniere" ) . 
<triplet> Petrarch <subj> Il Canzoniere <obj> notable work <triplet> Il Canzoniere <subj> Petrarch <obj> author