1932
23.9 x 32 cm (9 7/16 x 12 5/8 in.)
Charcoal, graphite, incision and gray acrylic paint on museum board
20th centuryAmericanBlack ink and black type on commercially printed cream wove paper
20th centuryAmericanSepia ink and acrylic varnish on off-white wove paper mounted on aluminum
20th centuryAmericanSilverpoint on illustration board
19th-20th centuryAmericanGraphite and printed black ink on cream colored paper (verso: mimeographed Biology 21 worksheet)
20th centuryAmericanBlack ink on off-white wove paper
20th centuryAmericanblack crayon, ink, with blue and orange watercolor; verso: black crayon and ink on paper
20th centuryAmerican?Black conté crayon on ivory tracing paper
20th centuryAmericanWatercolor over graphite on white wove paper
20th centuryAmericanGraphite on off-white wove paper
20th centuryAmericanGraphite on coated off-white wove paper
20th centuryAmericanGraphite on off-white wove paper; verso: charcoal
20th centuryAmerican