X-radiograph(s) of "Study for Head of St. Hilary (after a detail of fresco in the Duomo Parma)"

X-Radiograph Description: Overall X-Radiograph Settings: 20 kv, 2 ma, 5 sec Burroughs Number: 445 X-Radiograph(s) of: Artist: Correggio, Italian, ca. 1489-1534 Title: Study for Head of St. Hilary (after a detail of fresco in the Duomo Parma) Description: Paper, laid on canvas 20 x 15 (50.8 x 38.1) Owner: Harvard University Art Museums Object Number: 1922.131