James McNeill Whistler, A Dancing Woman in a Pink Rober Seen from the Back, 1888. Charcoal and gouache on paper, 23 x 71.12 cm.
John Singer Sargent, Sketch for the Sphinx and the Chimaera (Rotunda), 1917-21. Charcoal on paper, 62 x 45.5 cm (24 7/16 x 17 15/16 in). Museum of Fine Arts, Boston.
Luca Signorelli (c. 1441-1523), Nude Man From Rear. Black chalk, 41 x 25 cm (16 1/8 x 9 7/8 in). Louvre, Paris.
Raphael Sanzio (1483-1520), A Combat of Nude Men. Red chalk over stylus work, 37.9 x 28.1 cm (14 15/16 x 11 in). Ashmolean Museum, Oxford.
Arch of Janus Framing Temple of Vesta by Michael Graves.
Baccio Bandinelli (1493-1560), Male Nude From Sistine Ceiling. Pen and bistre wash, 40 x 21 cm (15 3/4 x 8 1/4 in). British Museum, London.
Tintoretto (Jacopo Robusti) (1512-1594), Draped Standing Figure. Black chalk, 33.4 x 18 cm (13 1/8 x 7 1/16 in). Uffizi, Florence.
Jacopo Pontormo, Study of Angel for the Annunciation, c. 1527-1528. Black chalk and yellowish brown wash over traces of red chalk, heightened with traces of white, on paper, 15 3/8 x 8 1/2 in. Uffizi, Florence, Italy.
Ginette Chalifoux, copy after Leonardo da Vinci’s ‘Study of a Head’ (detail), 2005. Ink on tinted watercolour paper, 12 x 14 in. Aristedes Classical Atelier.
Antonio Gaudí (1852–1926), Colonia Güell Church. Study for the nave of the church drawn on an inverted photograph of the funicular model. One of the few remaining sketches by Gaudí. Catedra Gaudi, Barcelona.