Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Projection room elevations, section, and plan (3/4" = 1'-0")

Watercolor, masking tape and graphite on off-white wove paper

Charcoal and red crayon (?) on off-white wove paper

Black ink and graphite on cream wove paper; verso: graphite and blue ink

Watercolor and graphite on cream wove paper

Sketchbook with red cloth-covered cardboard covers

Graphite on brown wove paper

Graphite on off-white wove paper

Black ink and graphite on cream wove paper (two pieces joined)

Graphite on paper

Black and brown ink on off-white wove paper

Adhesive-bound sketchpad

Colored crayon on black illustration board