X-radiograph(s) of "Holy Family"

X-Radiograph Description: Details : Head of St. Jerome (smaller head of the saint visible underneath); Virgin; Virgin's foot X-Radiograph Settings: 20 kv, 2 ma, 10 sec.; 25 kv, 2 ma, 8 sec.; 25 kv, 3 ma, 6 sec. Burroughs Number: 1564 X-Radiograph(s) of: Artist: Polidoro da Lanciano, Italian, ca.1515-1565 Title: Holy Family Description: Canvas; 28 3/8 x 35 1/2 (72.2 x 90.2) Owner: Harvard University Art Museums Object Number: 1911.1