Owl Yawning, for "A Three-Sided Question," by Oliver Herford

Graphite and watercolor on off-white wove paper

Graphite on off-white wove paper

Black, white, and blue chalk on brown wove paper

Graphite and red chalk on off-white wove paper

Watercolor and graphite on off-white wove paper

Brown ink and graphite on off-white wove paper

Graphite on paper

Watercolor on off-white wove paper

Graphite on blue-flecked cream laid paper

Pastel on brown wove paper

Graphite on off-white wove paper

Charcoal on blue laid paper