X-Radiograph Description: X-Radiograph , see x-ray #4019 X-Radiograph Settings: 5 ma, 45 kv, 75 sec. Burroughs Number: 4190 X-Radiograph(s) of: Artist: Master of the Fogg Pieta, Italian, active 14th century Title: Pieta Description: Tempera on panel (poplar?), 1" thick Owner: Harvard University Art Museums Object Number: 1927.306