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

Onset of Turbulence (#9)

Mel Bochner

X-radiograph(s) of "Boy and Dog"

Jacques-Louis David

X-radiograph(s) of "Male Portrait"

Govert Flinck Nicolaes Maes Pieter Franchoys

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

Frans Hals II

A Boy with a Finger to His Lips

Nicolas-Bernard Lépicié

Study Sheet verso: Study of Legs and Feet

Unidentified Artist

Sketch of a Man and a Woman

William Valentine Schevill

X-radiograph(s) of "Virgin and Child "

Alceo Dossena Giacomo del Pisano

Sketches of a Seated Woman; verso: Sketches of a Woman

William Valentine Schevill

Sketch of a Nude Girl

William Valentine Schevill

X-radiograph(s) of "Count Rumford"

Thomas Gainsborough

X-radiograph(s) of "Federigo Gonzagaa"

Francesco Francia

Samuel Taylor Coleridge (1772 - 1834)

Washington Allston

X-radiograph(s) of "Cassone (test on wood structure)"

Francesco di Giorgio Martino, called Francesco di Giorgio

X-radiograph(s) of "[add work title]"

X-radiograph(s) of "Pilate Washing his Hands"

Jacob van Dorsten Rembrandt Harmensz. van Rijn Karel van der Pluym

Sketch of a Woman Holding a Plate; verso: Sketch of a Man Holding a Hat

William Valentine Schevill

Psyche

Julia Margaret Cameron

Studies of a Gentleman

Jean Restout

Arthur of England, from the Tomb of Maximilian; verso: Sketches of a Woman

John Singer Sargent

X-radiograph(s) of "Virgin Suckling Child"

Master of Flémalle Jacques Daret

Head of a Woman (Elizabeth Dawson?)

James Abbott McNeill Whistler

Head of a Man

Unidentified Artist

X-radiograph(s) of "Annonciation"

Master of Flémalle Jacques Daret

Marquis de Fortault

François Quesnel

X-radiograph(s) of "Katharina Furlegerin (?)"

Albrecht Dürer

René de Carbonnel, Marquis de Canisy

François Quesnel

Boy Squatting by a Fence

Unidentified Artist

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

Jacob Adriaensz. Backer

Untitled (Portrait A. H.)

Anneliese Hager

Draped Model; verso: Nude Model

James Abbott McNeill Whistler

Gesture of the Calla, 2

Michael Mazur

Untitled (portrait of a soldier and two soldiers in a village, Vietnam)

Gordon W. Gahan

Untitled (Dr. Herman M. Juergens looking through microscope)

Gordon W. Gahan

Untitled (soldiers working on helicopter, Vietnam)

Gordon W. Gahan

X-radiograph(s) of "Nativity"

Giovanni di Paolo

Untitled (Dr. Herman M. Juergens on telephone)

Gordon W. Gahan

X-radiograph(s) of "Pieta"

Marco Basaiti

Untitled (view through tubes used to hold ammunition, Vietnam)

Gordon W. Gahan

Textures and values

Unidentified Artist

Council of Horses

Thomas Abel Prior James Ward

Horse and Cattle

Johann Elias Ridinger Johann Heinrich Roos