Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Outside stairs at servant porch; exterior door entry: plan, sections, elevations, details (1/2" , 1 1/2" , and 6" = 1'0")

Watercolor and graphite on cream wove paper

Graphite on off-white wove paper

Graphite on off-white wove paper

Graphite on paper

Graphite and black crayon on cream wove paper

Charcoal on paper

Graphite on cream wove paper pastedown of sketchbook cover

Black ink and watercolor on ivory wove paper

Graphite on coated off-white wove paper

Watercolor on off-white wove paper

Brown, red and black printer's ink with graphite and hand-printed collage elements on two joined sheets of cream handmade paper

Charcoal and graphite on vellum tracing paper