Foppa was the only painter of Lombardy to receive this distinction. Following this, Foppa painted a series of frescoes to decorate the Medici Bank of Milan, a palazzo building gifted by Francesco Sforza to Cosimo de' Medici. His work there began in 1464, overseen by the representative of the Medici Bank in Milan Pigello Portinari, and was completed by 1467. The frescoes included a series of eight Roman emperors (including one of Trajan for which a provisional sketch still exists) and a portrait of the Francesco Sforza and his family. The only surviving fresco from this building features a small boy reading, with the name Cicero engraved on the bench behind him. This work, titled The Young Cicero Reading, is the only known secular work by Foppa that survives today and is located at the Wallace Collection in London. The subject of the painting has been debated by historians, with suggestions including Gian Galeazzo Sforza (grandson of Francesco), Augustus' grandson, and Cicero himself. In 1468, Foppa was again commissioned by Pigello Portinari to decorate the Portinari Chapel at Saint Eustorgio in Milan. The Chapel holds the remains of Saint Peter Martyr of Verona, and for a time held those of Portinari himself. While it is not certain that Foppa painted the Chapel himself, the fresco cycle Life of St. Peter Martyr is commonly attributed to him. His work in the Chapel also includes a Doctors of the Church cycle, busts of saints, and an Annunciation. The rainbow decoration of the ribbed dome likely represents a “Beatific Vision” of an arrival in paradise, with the rainbow signifying God and implying Portinari's piety. The frescoes in the Chapel display an advanced and creative use of perspective by Foppa, featuring vanishing points outside of the composition. Combined with his use of light and placement of the scenes in everyday settings, this “Lombard perspective” makes the scenes come to life. After the death of his father Francesco, Duke Galeazzo Maria Sforza continued his family's close relationship with Foppa, first commissioning an altarpiece at Monza in 1466 and making him a member of the ducal household in 1468. Upon a request from Foppa in 1468, the new Duke granted him citizenship in Pavia and safe conduct for six years, allowing the painter to move about Milanese territorial holdings without tolls or taxes. Foppa returned to Brescia to paint an altarpiece for the Church of Saint