Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Interior elevations of swimming pool (1/4" and 1/2" = 1'-0")

Bound book with paper-covered cardboard covers, watercolor drawing on cover

Black ink on off-white card

Watercolor and gouache on white wove paper

Black crayon on off-white laid paper

Graphite on soft white wove paper

Graphite on off-white wove paper

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

Black chalk on cream laid paper

Black ink and pen on paper

Black and white chalk on red-brown laid paper

Crayon on paper

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