undated
11.43 x 8.57 cm (4 1/2 x 3 3/8 in.)
Graphite and white chalk on blue-gray wove paper
19th centuryAmericanBrown ink and brown and pale brown-gray wash, and touches of white opaque watercolor over traces of black chalk, on cream antique laid paper, framing line in brown ink
17th centuryDutchOil paint on offset lithograph, 1989 edition of Flora de la Real Expedición Botánica del Nuevo Reino de Granada (1783-1810)
21st centuryPeruvianGraphite on off-white wove paper
19th centuryFrenchBlack marker on paper
20th centuryGermanGraphite on off-white wove paper
20th centuryGermanMonotype in cloth-covered clamshell box
20th centuryAmericanBlack ink, graphite, and yellow chalk on off-white wove paper
20th centuryAmericanBlack ink, gray wash, and graphite on white wove paper
19th centuryBritishBlack crayon on paper
20th centuryGerman?Graphite on off-white wove paper
20th centuryAmericanBlack ink and graphite on white paper
20th centuryAmerican