[2] In 1423, he joined the Florentine guild Arte dei Medici e Speziali (Doctors and Apothecaries), which included painters as an independent branch.

[3] He spent many years traveling, including a trip to Hungary from September 1425 to July 1427 under the patronage of Pipo of Ozora, a mercenary captain.

In the interim, he collaborated with his younger colleague, Masaccio, to paint the frescoes in the Brancacci Chapel in the Basilica of Santa Maria del Carmine, Florence, which were much admired by fellow artists throughout the fifteenth century.

[5] Masolino was probably the first painter to make use of a central vanishing point in his 1423 painting St. Peter Healing a Cripple and the Raising of Tabitha.

In an elaborate temple setting, Catherine is pointing toward heaven, while the emperor, here bareheaded, gazes up at the idolatrous statue atop the altar.