Design for factory wall: Electro-combine with chart at left showing growth of the society of inventors

Black ink and graphite on tracing paper, darkened and mounted to laid paper

Black ink, brown and gray washes, over red chalk on white antique laid paper

Watercolor and black ink on heavy off-white wove paper

Graphite on off-white laid paper

Ink on paper

Crayon on paper

Ink on paper

Watercolor on off-white wove paper

Black ink and watercolor on heavy white paper

Brown ink and brown wash, partially squared in black chalk, on cream antique laid paper; verso: brown ink rubbed with red chalk

Black ink over graphite on off-white wove paper

Black crayon with touches of pastel in white, mauve, pink, yellow, and blue on light brown paper