Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Exterior stone through main entrance; part of northwest elevation (1/2" and 1/4" = 1'0")

Graphite with charcoal on paper

Graphite on off-white wove paper

Graphite, chalk, and wax on white wove paper

Graphite on off-white wove paper

Graphite and white chalk on gray laid paper

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

Watercolor and gouache on white wove paper

Black ink on off-white wove paper

Charcoal on cream laid paper

Black ink, colored and black chalk on off-white wove paper

Crayon on paper

Black ink on off-white wove paper