United States of America $1 Silver Certificate featuring Martha Washington and George Washington, circa 1886

United State of America $5 Silver Certificate featuring Chief Running Antelope, circa 1899

Félix Vallotton, Senegalese Soldiers at Camp de Mailly, 1917

Félix Vallotton, Portrait of Gertrude Stein, 1907

Félix Vallotton, The Bath, Summer Evening, 1892


Les Nabis artists: (L to R) Ker-Xavier Roussel, Édouard Vuillard, Romain Coolus, Felix Vallotton, 1899

Félix Vallotton, Mon Portrait, 1897

Yulian L. Shvartsbreim, House of Soviets, Kaliningrad, Russia, 1975

NASA Landsat 7 image of Tassili n’Ajjer National Park, The Gambia

This image is made from multiple observations by the Landsat 7 satellite in the year 2000. It uses a combination of infrared, near-infrared, and visible light to better distinguish between the park’s various rock types. Sand appears in shades of yellow and tan. Granite rocks appear brick red. Blue areas are likely salts. As the patchwork of colors suggests, the geology of Tassili n’Ajjer is complex.

Georges Braque, Violin and Pitcher, 1910

Maerten van Heemskerck, Panorama with the Abduction of Helen Amidst the Wonders of the Ancient World, 1535

Lucas van Leyden, Lot and His Daughters, circa 1520