Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Second floor and roof plan and sections (1/4" = 1'-0")

Black ink and graphite on off-white wove paper

Graphite on paper

Oil and crayon on wove paper

Graphite on off-white wove paper

Charcoal on off-white laid paper

Charcoal on off-white laid paper

Charcoal on cream laid paper

Graphite on darkened off-white wove paper, mounted to cardboard

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

Watercolor and graphite on off-white wove paper

Watercolor and white gouache on blue wove paper

Black ink on off-white wove paper