Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Splay in: plan and section (1/2" = 1'-0" and full size)

Off-white card

Graphite on paper

Graphite on blue-flecked cream laid paper

Charcoal and black crayon, with stumping, on off-white wove paper

Watercolor and white gouache over graphite on cream wove paper

Graphite and watercolor on off-white wove paper

Watercolor on off-white wove paper

Watercolor on paper

Watercolor on off-white wove paper

Graphite on blue laid paper

Black ink on off-white wove paper

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