Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Lower pool in garden: plan and sections (1/2" = 1'-0")

pen, ink on brown paper

Graphite on paper

Graphite on off-white wove paper

Watercolor over graphite on off-white illustration board

Gray wash on off-white wove paper

Graphite on paper

Graphite with blue and orange on paper

Charcoal on off-white laid paper

Watercolor on off-white wove paper

Tempera on buff card

Charcoal and black chalk on off-white wove paper; verso: charcoal

Black ink and yellow chalk on off-white wove paper; verso: black ink