Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Layout of equipment in air conditioning room: plan and elevation

Graphite on paper

Opaque watercolor on cream wove paper (recto and verso)

Opaque watercolor (black and red) and graphite on paper board

Watercolor on off-white wove paper

Typed colon marks on black carbon paper

Black ink and gray wash on cream laid paper, mounted to brown wove paper

Graphite on buff wove paper

Colored chalk, graphite, metallic pigments, colored pencil on off-white wove paper (lined notebook paper), adhered to Japanese paper with cellophane tape and metal fasteners

Black ink on off-white wove paper

Collage of fern leaves on red wove paper

Gouache on beige laid paper, mounted on masonite

Graphite on commercially lined paper