Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Door details, D.A doors and mirrors (full size)

Colored chalk on gray-green wove paper

Fiber-tip ink on white wove paper, from a spiral-bound sketchbook

Black crayon on buff wove paper

Graphite on paper

Colored crayons on paper

Graphite on paper

Black ink and graphite on cream wove paper

Colored crayons on paper

Mixed media on paper

Watercolor over graphite on off-white wove paper

Black chalk on off-white wove paper

Graphite on translucent wove paper