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

Crayon over graphite on off-white wove paper

Colored crayon on paper

Black ink on off-white wove paper

Silverpoint on pink prepared paper

Leather bound sketchbook with additional four drawings on scrap paper

Watercolor over graphite on cream wove paper

Pastel on off-white wove paper

Graphite on off-white wove paper

Opaque and transparent watercolor on cream, thick, rough, wove paper

Black ink and graphite on brown tracing paper mounted to off-white card

Graphite and charcoal on off-white wove paper

Graphite on off-white wove paper