Study for Angels Sealing the Foreheads of the Children of Israel in Saint Peter's Basilica, 1652, Black chalk, brush with brown and gray wash, highlighted with white gouache, on three sheets of brownish paper glued with overlapping joints, 16-3/4 x 44-9/16 in. (42. 7 x 113. 2 cm) maximum, unevenly cut upper and lower borders, Drawings, Pietro da Cortona (Pietro Berrettini) (Italian, Cortona 1596?1669 Rome), Composed of three joined sheets, this magisterial design represents a vision of the Apocalypse, with the division of risen souls on the Day of Judgment. It is a study for the mosaic decoration of a dome in the right nave of Saint Peter's basilica