Anonymous Artist, Portrait of a Young Man, c. 1650, oil on canvas, National Gallery of Art, Washington. https://dartabase.art/cite/nga/89

Anonymous Artist, Andrea de' Franceschi, late 16th or early 17th century, oil on canvas, National Gallery of Art, Washington. https://dartabase.art/cite/nga/42

Anonymous Artist, The Smiling Girl, c. 1925, oil on canvas, National Gallery of Art, Washington. https://dartabase.art/cite/nga/62

Anonymous Artist, Pope Innocent X, c. 1650, oil on canvas, National Gallery of Art, Washington. https://dartabase.art/cite/nga/87

Anonymous Artist, Madonna and Child, c. 1470, tempera on poplar panel, National Gallery of Art, Washington. https://dartabase.art/cite/nga/1189

Anonymous Artist, The Lacemaker, c. 1925, oil on canvas, National Gallery of Art, Washington. https://dartabase.art/cite/nga/61

Caspar David Friedrich, Gebirge bei aufsteigendem Nebel, c. 1835, Öl auf Leinwand, Städel Museum, Frankfurt am Main. https://dartabase.art/cite/staedel/1806

Anonymous Artist, Miss Nelly O'Brien, early to mid nineteenth century, oil on canvas, National Gallery of Art, Washington. https://dartabase.art/cite/nga/1215

Öyvind Fahlström, Notes 4 (C. I. A. Brand Bananas), 1970, Synthetic polymer paint and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36861

Anonymous Artist, Saint Jerome in the Wilderness, c. 1475, tempera on poplar panel, National Gallery of Art, Washington. https://dartabase.art/cite/nga/39

Anonymous Artist, Saint Jerome in the Wilderness, c. 1490/1500, tempera on poplar panel, National Gallery of Art, Washington. https://dartabase.art/cite/nga/423

Anonymous Artist, Christ Appearing to the Virgin, c. 1475, oil on panel, National Gallery of Art, Washington. https://dartabase.art/cite/nga/52

Öyvind Fahlström, Plan for World Trade Monopoly, 1970, Cut-and-pasted paper with synthetic polymer paint, ink, and colored pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36864

Unknown 19th Century, Portrait of a Lady, probably c. 1820, oil on canvas, National Gallery of Art, Washington. https://dartabase.art/cite/nga/1131

Carl Fredrik von Breda, Mrs. William Hartigan, 1787/1796, oil on canvas, National Gallery of Art, Washington. https://dartabase.art/cite/nga/1109

Anonymous Artist, Saint Bernard with Donor [obverse], probably early 20th century, oil on panel, National Gallery of Art, Washington. https://dartabase.art/cite/nga/3200

Unknown 18th Century, Benjamin West, c. 1776, oil on canvas, National Gallery of Art, Washington. https://dartabase.art/cite/nga/1133

Anonymous Artist, Moonlight, early 20th century, oil on canvas, National Gallery of Art, Washington. https://dartabase.art/cite/nga/3204

Anonymous Artist, Venus and Cupid in a Landscape, c. 1505/1515, oil on panel, National Gallery of Art, Washington. https://dartabase.art/cite/nga/283

Anonymous Artist, Study of an Old Man, probably late 17th century, oil on panel, National Gallery of Art, Washington. https://dartabase.art/cite/nga/1202