Plant and Insect Study: Bottle Gourd; Io Butterfly

Black chalk on cream antique laid paper

Black ink and brown wash on cream paper

Transparent and opaque watercolor with black ink, gum additions and traces of graphite on off-white modern laid paper

Gray ink, gray wash, and white gouache (darkened) on cream laid paper

Pastel

Ink on paper

Brown wash and graphite

Gray wash and black ink over graphite on cream wove paper

Gray wash and black ink over graphite on cream wove paper

Gray wash and brown ink on off-white antique laid paper, framing lines in brown ink; verso: brown ink

Red ink and red wash