Plant and Insect Study: Bottle Gourd; Io Butterfly

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

Graphite and white chalk on cream antique laid paper prepared with brown wash

Gray wash

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

Gray wash, black ink over graphite on cream wove paper

Brown ink, gray and brown washes on cream antique laid paper

Gray wash and black ink over graphite on cream wove paper

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

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

Brown ink and brown wash on cream paper