X-radiograph(s) of "Washington Allston"

X-Radiograph Description: X-Radiograph X-Radiograph Settings: 15 to 27 kv, 5 ma, 7 1/2 to 1 1/2 sec.; 28 kv 5 ma 8 sec. (best); 10 to 20 kv, 5 ma, 10 to 2 sec. Burroughs Number: 3326 X-Radiograph(s) of: Artist: Harding, Chester, American, 1792-1866 Artist: Also att. to Osgood, Charles, American, 1809-1890 Title: Washington Allston Owner: Cambridge Historical Society, MA