Antoine Watteau, A Man Reclining and a Woman Seated on the Ground, c. 1716, red, black, and white chalk on brown laid paper, 24.1 x 35.9 cm (9 1/2 x 14 1/8 in.), National Gallery of Art, Washington D.C., https://www.nga.gov/collection/art-object-page.74176.html.
René Gaillard after Jean-Baptiste Greuze, La voluptueuse, etching and engraving, Widener Collection, National Gallery of Art, Washington D.C., https://purl.org/nga/collection/artobject/2984.
For signed, scholarly encyclopedia entries on all aspects of art, design and architecture, try Grove Art Online (available through Oxford Art Online) .