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

Black marker on paper

Colored marker and black pen on paper

Colored marker on paper

Watercolor over graphite on cream wove paper

Graphite and watercolor on paper

Black and white crayon

Black crayon on paper

Black ink on off-white wove paper

Black marker on paper

Graphite on cream wove paper

Black ink and graphite; verso: graphite