Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Door frames: details (full size)

Sketchbook with cardboard covers and spiral wire binding

Graphite, black crayon and ink on paper

Watercolor over graphite on off-white wove paper

Crayon on paper

Oil on white prepared paper

Colored crayons on paper

Black ink and graphite on cream wove paper

Ink on paper

Graphite on off-white wove paper

Black ink and brown chalk on red-brown laid paper, mounted to cardboard

Graphite on paper

Black ink and charcoal on cream laid paper