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

Alexander Bogomazov, Three Figures of Woodcutters, c. 1927–28, Watercolor and pencil on paper on board, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36471

Zbigniew Makowski, [Untitled], 1964, Watercolor and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38583

Zbigniew Makowski, [Untitled], 1964, Watercolor and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37655

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

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

Jan Lebenstein, Figure, 1962, Gouache, watercolor, and ink on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37823

Louis Marcoussis, Zither, Bottle, Pipe and Sheet Music, 1919, Watercolor, oil, gouache, ink, and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/35042

Henryk Berlewi, First State of the Mechano-Faktura (I Stade de la Mécano-Facture), 1923, Gouache and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/38181

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

Aleksander Kobzdej, Conflict, 1959, Casein and oil on paper on canvas, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/33730

Jan Lebenstein, Axial Figure, 1960, Watercolor, ink, and ballpoint pen on graph paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/37821

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

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

Alexander Bogomazov, .a) Man and Woman Carrying Large Baskets  .b) Untitled, c. 1927–28, Watercolor and pencil on paper, The Museum of Modern Art, New York. https://dartabase.art/cite/moma/36466

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