Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Workshop wall and sill: details (full size)

Watercolor over graphite on off-white wove paper

Black marker on graph paper

Dark red-brown conte crayon on white wove paper

Graphite on paper

Black crayon on thin buff wove paper

Watercolor, black ink and white gouache on off-white wove paper

Collage of found cardboard and crayon

Black ink and graphite on off-white wove paper

Graphite and colored pencil on cream wove paper

Black ink on off-white wove paper (recto and verso)

Watercolor over graphite on heavy white wove paper

Charcoal, oil stick, acrylic, and Liquid Paper on white wove paper