Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Plumbing diagrams (1/8" = 1'-0")

Graphite on off-white wove paper

Oil on white prepared paper

Graphite on paper

Crayon on paper

Watercolor on cream wove paper

Graphite on buff wove paper

Black ink and gouache on cream wove paper

Watercolor, white gouache and gold paint over graphite on heavy cream wove paper

Graphite on off-white wove paper (recto and verso)

Graphite on paper

Graphite on paper

Graphite on off-white wove paper