X-radiograph(s) of "Henry Clay", ca. 1760 - after 1816

Artist of original: John Neagle

X-radiograph(s) of "Madonna and Child", 1425-40 - 1494

Artist of original: School of Hans Memling

X-radiograph(s) of "Mrs. Tyng", 1688 - 1751

Artist of original: (?) Attributed to John Smibert

X-radiograph(s) of "Benjamin Lincoln", 1770 - 1845

Artist of original: Henry Sargent

X-radiograph(s) of "Male Portrait"

X-radiograph(s) of "Portrait of a Woman", 1581 - 1666

Artist of original: Frans Hals

X-radiograph(s) of "View of the Rialto", 1712 - 1793

Artist of original: (?) Francesco Guardi

X-radiograph(s), 1450 - 1499

Artist of original: School of Bartolomeo Vivarini

The Wood Chopper (Le coup de grace), 1853 - 1918

Ferdinand Hodler

Two Old Men, 1853 - 1918

Ferdinand Hodler

Portrait of a Lady with Flowers

Indian

Maharao Durjan Sal of Kota Plaiting Krishna's Hair

Attributed to The Kota Master

Genesis I, 1880 - 1916

Franz Marc

Cup and Saucer, 1928 - 2014

Otto Piene

Two Mummers (Dos Máscaras), 1886 - 1945

José Gutiérrez Solana

Olive Trees, Corfu, 1856 - 1925

John Singer Sargent

Class Photographs. A Societie Groupe, from "Manners and Customs of Ye Harvard Students", 1856 - 1900

Francis Gilbert Attwood

Ye Puddynge Theatricals, from "Manners and Customs of Ye Harvard Students", 1856 - 1900

Francis Gilbert Attwood

General Benjamin F.Butler's Nightmare 1.The Night before the Battle, 1856 - 1900

Francis Gilbert Attwood

General Benjamin F. Butler's Nightmare: Proposed Procession of the Unemployed, 1856 - 1900

Francis Gilbert Attwood