Studies of Thistles and Beetles: Julienne de Mahon, Centaurea glastifolia, Saussurea polypopyfolia and Scarabeus fasciatus de Sinne

Graphite on off-white wove paper

Watercolor over black chalk on off-white wove paper

Black and white chalk on blue wove paper; verso: black and white chalk

Graphite on paper

Graphite on buff wove paper

Graphite on cream wove paper mounted to heavy cardboard

Blue marker and black pen on paper

Graphite on paper

Graphite on paper

Graphite on off-white wove paper

Ink and colored pencils on paper

Watercolor over graphite and black chalk on white wove paper