19th-20th century
33 x 21.3 cm (13 x 8 3/8 in.)
Graphite and printed black ink on cream colored paper (verso: mimeographed Biology 21 worksheet)
20th centuryAmericanWatercolor heightened with white over graphite on gray-blue paper
19th centuryFrenchBlack crayon on paper
20th centuryGermanGraphite on tan wove paper
19th centuryAustrianBlack crayon on thin ivory wove paper
20th centuryAmericanBlack crayon on paper
20th centuryGermanMixed media
21st centuryGermanGraphite and purple chalk on cream modern laid paper
19th centuryBritishCharcoal and black ink on cream laid paper
20th centuryWatercolor on paper
20th centuryGermanGraphite, gouache, and watercolor on white wove paper
18th-19th centuryFrenchBlack ink and charcoal on cream laid paper
20th century