Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Exterior stone through main entrance; part of northwest elevation (1/2" and 1/4" = 1'0")

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

Graphite on paper

Brown ink, gray wash, and colored chalk over graphite on off-white cardboard

Watercolor over graphite on off-white wove paper

Graphite on off-white wove paper

Sketchbook with cream paper-covered cardboard covers

Black ink, gouache, crayon, graphite, collage and scratchwork on prepared board

Colored chalk on heavy brown wove paper

Watercolor and graphite on translucent vellum paper, partly incised (?)

Graphite on paper

Charcoal on blue laid paper

Oil over graphite on off-white wove paper