1923
Verso shows a preliminary sketch of the same figure, with mathematical calculations.
image: 52 x 36.6 cm (20 1/2 x 14 7/16 in.) actual: 56.2 x 38.5 cm (22 1/8 x 15 3/16 in.)
Bequest of the artist to the Fogg Art Museum, 1936.

Black ink on cream wove paper
20th centuryAmerican
Black conté crayon on ivory tracing paper
20th centuryAmerican
India ink on cream wove ledger paper inscribed in brown ink
20th centuryAmericanGraphite on paper
20th centuryAmerican
Crayon on black illustration board
20th centuryAmericanInk and graphite on paper
20th centuryAmericanCharcoal on blue laid paper
19th-20th centuryAmerican
Incised line and Aquarelle on white wove paper
20th centuryAmericanGouache, gray wash, and graphite on off-white wove paper
20th centuryAmerican
Watercolor over graphite on off-white illustration board
20th centuryAmerican
Chalk on paper
20th centuryAmericanGraphite on off-white wove paper
19th-20th centuryAmerican