Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Main stairs: plans, elevation and sections (1/2" , 3" =1"-0" )

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

Watercolor over graphite on illustration board, waxed

Black ink over graphite on cream board; verso: graphite

Graphite on heavy off-white wove paper

Graphite on off-white wove paper

Graphite on buff wove paper

Graphite on off-white wove paper

Incised line and Aquarelle on white wove paper

Acrylic paint and wash on off-white wove paper

Colored crayons on paper and mounted

Graphite on off-white wove paper

Black ink, blue and white gouache, and blue watercolor on off-white illustration board