Donatello entered into a type of workshop partnership with Michelozzo in 1425. Both artists worked together right into the 1430s on a whole series of extensive projects which included the funeral monument to the anti-pope John XXIII. The overall design of the monument is from Donatello, but in the execution he was heavily assisted by Michelozzo. The bronze effigy is certainly by Donatello, the marble reliefs of the Madonna with Child and the Virtues are by Michelozzo.

Preview	Picture Data	File Info	Comment
	Funeral Monument to the Anti-pope John XXIII 1422-28 Gilded pietra serena, 713 x 200 x 213 cm Baptistery, Florence	1095*1500 True Color 247 Kb
	Funeral Monument to the Anti-pope John XXIII 1422-28 Gilded pietra serena, 713 x 200 x 213 cm Baptistery, Florence	900*1304 True Color 228 Kb
	Funeral Monument to the Anti-pope John XXIII (detail) 1422-28 Gilded pietra serena Baptistery, Florence	1451*1000 True Color 239 Kb
	Funeral Monument to the Anti-pope John XXIII (detail) 1422-28 Gilded pietra serena Baptistery, Florence	2200*1650 True Color 265 Kb
	Funeral Monument to the Anti-pope John XXIII (detail) 1422-28 Gilded pietra serena Baptistery, Florence	1484*1000 True Color 237 Kb
	Funeral Monument to the Anti-pope John XXIII (detail) 1422-28 Pietra serena Baptistery, Florence	998*660 True Color 139 Kb
	Funeral Monument to the Anti-pope John XXIII (detail) 1422-28 Pietra serena Baptistery, Florence	780*422 True Color 70 Kb
	Funeral Monument to the Anti-Pope John XXIII (detail) 1422-28 Pietra serena Baptistery, Florence	1500*1125 True Color 156 Kb