Pieter Bruegel the Elder: The parable of the blind
tempera on canvas, 1568
Museo di Capodimonte, Naples

Bertram of Minden: Cain and Abel bring offerings
mixed techniques on panel, 1383
Kunsthalle, Hamburg

Andrea Mantegna: Adoration of the Shepherds
tempera on canvas, c. 1451-53
Metropolitan Museum of Art, New York

Diego Rodríguez da Silva y Velázquez: Saint Paul
oil on canvas, 1618-1620
Museu Nacional d'Art de Catalunya, Barcelona

Titian: John the Baptist
oil on canvas, ca. 1542
Gallerie dell'Accademia, Venice