Illustration for Doctor Doolittle (The Doctor at the Zoo)

Charcoal on cream wove paper

Graphite on white paper

Watercolor with touches of white gouache over graphite on white paper, attached to cardboard

Poster paint on white paper

Charcoal on cream wove paper

Graphite on white paper

Colored crayons and white chalk on gray paper

Charcoal, white chalk and black ink on brown wove paper

Charcoal on cream wove paper

Colored chalk on tan wove paper

Ink on yellowish paper mounted on cardboard

Red and white chalk, graphite, reddish-brown ink, and blue wash on tan paper