X-radiograph(s) of "Male Portrait"

X-radiograph(s) of "Madonna and Saints", c. 1406 - 1469

Artist of original: School of Filippo Lippi

X-radiograph(s) of "Deborah Clarke", 1735 - 1756

Artist of original: (?) Nathaniel Smibert

X-radiograph(s) of "John Frost"

X-radiograph(s) of "Le Mezzetin", 1684 - 1721

Artist of original: Jean-Antoine Watteau

X-radiograph(s) of "Pieta", 1487-1553

Artist of original: (?) Bonifazio de' Pitati

X-radiograph(s) of "Henry Gibbs", 1727 - 1792

Artist of original: John Greenwood

X-radiograph(s) of "Heymann Dullaert", 1619 - 1688

Artist of original: Philips Koninck

X-radiograph(s) of "Girl Plucking a Fowl", 1624-1673

Artist of original: Barent Fabritius

X-radiograph(s) of "Esther and Mordecai", 1645 - 1727

Artist of original: Arent de Gelder

X-radiograph(s) of "British Marching into Concord", 1751 - 1801

Artist of original: Ralph Earl

X-radiograph(s) of "Captain Byfield Lyde", c. 1753 - 1818

Artist of original: John Johnston

X-radiograph(s) of "Catherine Greene", 1738 - 1815

Artist of original: John Singleton Copley

X-radiograph(s) of "Dr. Daniel Greenleaf", c. 1725 - 1787

Artist of original: Joseph Blackburn

X-radiograph(s) of "Sacrifice of Abraham", 1486 - 1530

Artist of original: Andrea del Sarto

X-radiograph(s) of "Michelangelo"

X-radiograph(s) of "Sarah Dawes Hammond", 1800 - 1880

Artist of original: Francis Alexander

X-radiograph(s) of "Samuel Willard"

X-radiograph(s) of "Charles Chauncy"

X-radiograph(s) of "Female Portrait", 1497/98 - 1543

Artist of original: (?) Hans Holbein the Younger