undated
14.61 x 20.96 cm (5 3/4 x 8 1/4 in.)
Watercolor over graphite on off-white illustration board
20th centuryAmericanBlack and blue crayon on paper and mounted
20th centuryAmericanCharcoal on tan laid paper
20th centuryAmericanOil paint on offset lithograph, 1989 edition of Flora de la Real Expedición Botánica del Nuevo Reino de Granada (1783-1810)
21st centuryPeruvianGraphite on green card
20th centuryAmericanBlack marker on paper
Graphite on ivory laid paper
20th centuryAmericanBlack ink on cream wove paper
20th centuryGermanColored crayons on paper
20th centuryGermanBlack crayon on off-white antique laid paper
19th centuryFrenchRed crayon on heavy off-white wove paper
20th centuryAmerican