Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Study joist layout: plan (1/2" = 1'-0")

Oil on green prepared paper

Ink, colored crayon, gouache, and graphite traces on off-white laid paper

Black ink on off-white wove paper

Graphite on off-white laid paper

Colored pencil on off-white wove paper

Watercolor over graphite on off-white wove paper

Black ink, watercolor pencil, and charcoal on cream wove paper

Black ink on off-white wove paper

Black ink on gray-green laid paper

Graphite on paper

Black, red, and white chalk, brown wash, and charcoal on off-white laid paper

Graphite on heavy weight, white card stock (Strathmore Bristol board)