Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Details of garden retaining walls: plan and section (1/2" = 1'-0")

Graphite on off-white wove paper

Sketchbook with cardboard covers and spiral wire binding

Graphite on paper

Graphite on thin off-white wove paper

Watercolor and graphite on cream wove paper

Graphite on off-white wove paper mounted on buff card

Graphite on tan wove paper

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

Black ink and red crayon on cream laid paper

Charcoal on blue laid paper

Graphite on cream colored commercially lined paper

Graphite on off-white wove paper