Pepper

Frank Noelker

Rachel

Frank Noelker

Untitled (baby gorilla under table)

Jack Gould

Untitled (woman in fur stole, animal head draped down her arm)

Curtis Studio

Untitled (gorilla holding hand of trainer)

Joseph Janney Steinmetz

Monkeys: Mother and Two Children

Mori Sosen 森狙仙

Head and Shoulders of an Old Man

Oscar Fehrer

James Mills Peirce (1834-1906)

Alfred Quinton Collins James Mills Peirce

Self-Portrait

Jules Olitski

Elizabeth Cotten

Brian Lanker

Untiled (older man exercising with bicycle laying beside him, New York)

Ken Heyman

X-radiograph(s) of "Portrait of a Dutch Lady"

Bust of an Old Man with Long Hair

William Baillie Rembrandt Harmensz. van Rijn

X-radiograph(s) of "Young Man"

Peter Paul Rubens

Lion

Wenceslaus Hollar Albrecht Dürer

X-radiograph(s) of "Self-Portrait for Gauguin"

Vincent van Gogh

X-radiograph(s) of "Abraham Grapheus"

Cornelis Vos

[Organ grinder's monkey]

Lyonel Feininger

The Assumption of the Virgin

Jacopo Tintoretto

Reclining Female Nude

Thomas Cowperthwait Eakins

Henry James (1811-1882)

Frank Duveneck Henry James

X-radiograph(s) of "Adoration of Magi"

Gentile Bellini

At the Milliner's

Pierre-Auguste Renoir

Portrait of a Young Woman

Robert Hatton Monks

X-radiograph(s) of "St. Yves"

Jacques Jordaens

X-radiograph(s) of "Cotton Mather"

Peter Pelham

John Locke (1632-1704)

Edward Lutterel John Locke

Untitled (soldiers in jungle, central highlands near Dak To, Vietnam)

Gordon W. Gahan

Michelangelo Buonarotti

Unidentified Artist Jacopino del Conte

The Student

Jozef Israëls

X-radiograph(s) of "Three Girls"

Narcisse Virgile Diaz de la Peña

Untitled (soldier silhouetted against a doorway, Vietnam)

Gordon W. Gahan

Portrait of Seated Young Man with Mirror to Right

Denman Waldo Ross

Miss Elizabeth Beauclerc as Una with the Lion

Sir Joshua Reynolds

Naomi with Yuri, Boston

Nan Goldin

X-radiograph(s) of "St. Paul"

Jusepe de Ribera

"Slim"

David Gordon

Cadaver

Jerry Liebling

X-radiograph(s) of "Self-Portrait"

Jean-Auguste-Dominique Ingres

Old English Lady

Bertha Tarnay

X-radiograph(s) of "Ecstasy of St. Jerome"

Bernardino Passeri

Calabazas, after Velazquez

Denman Waldo Ross Diego Rodriguez Velázquez

"And the devil that deceived them was cast into the lake of fire, where the beast and the false prophets are..."

Odilon Redon

Ushabti

The Flying Dutchman (Act III): The Rapture of Senta and the Dutchman

Ignace-Henri-Jean-Théodore Fantin-Latour

Head of a Man

Wilhelm Leibl

Untitled (Virgil Thaxton, near Mechanicsburg, Ohio)

Ben Shahn

Wait Still Winthrop (1642-1717)

Unidentified Artist Wait Still Winthrop

X-radiograph(s) of "Allegory of Vice and Vertue (copy)"

Paolo Caliari, called Veronese

X-radiograph(s) of "Mrs. Rea"

John Singleton Copley

X-radiograph(s) of "Portrait of a Woman"

Jan Anthonisz. van Ravesteyn

The Raising of Lazarus

Jacob Louÿs Jan Lievens

Untitled

Christian Boltanski

X-radiograph(s) of "Sheperdess"

Paulus Moreelse