While still working on the Last Judgement, Michelangelo received yet another commission for the Vatican. This was for the painting of two large frescos in the Cappella Paolina depicting significant events in the lives of the two most important saints of Rome, the Conversion of Saint Paul and the Crucifixion of Saint Peter. Like the Last Judgement, these two works are complex compositions containing a great number of figures.[51] They were completed in 1550. In the same year, Giorgio Vasari published his Vita, including a biography of Michelangelo.[52]