undated
23.81 x 12.7 cm (9 3/8 x 5 in.)
Black ink and graphite on off-white wove paper
19th centuryBritishBlue pen, paper insert, and adhesive on paper
20th centuryGermanBlack crayon on paper
20th centuryGerman?Sketchbook with brown paper-covered cardboard covers
19th centuryAmericanGraphite on paper
20th centuryGermanMixed media on paper
20th centuryAmericanBlack chalk with touches of graphite on white antique laid paper, with a framing line in black chalk
18th-19th centuryDutchGraphite on off-white wove paper
19th-20th centuryAmericanBrown ink, graphite, watercolor, and white gouache on cream antique laid paper
18th-19th centuryBritishGraphite, fixed, on off-white wove paper
19th centuryAmericanOil paint on offset lithograph, 1989 edition of Flora de la Real Expedición Botánica del Nuevo Reino de Granada (1783-1810)
21st centuryPeruvianBlack crayon on paper
20th centuryGerman