Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Revision of retaining wall (garage): plan and details (1/8" = 1'-0")

Graphite on heavy blue wove paper

Black ink on cream wove paper

Graphite on paper

Charcoal on blue laid paper

Watercolor over graphite on off-white wove paper, mounted to off-white card

Black ink of off-white wove paper

Graphite with black and gray crayon on paper

Graphite on blue laid paper

Graphite on paper

Watercolor and white crayon on off-white wove paper, mounted to cardboard

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

Charcoal on cream laid paper