Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Pipe railing details (1/4" , 1/2" = 1'-0" and full size)

Black ink on off-white wove paper

Brown and gray wash, white gouache, black ink and black crayon on off-white wove paper, incised and scrubbed

Graphite on blue wove paper

Charcoal on blue laid paper

Black ink and yellow chalk on off-white wove paper

Sketchbook with cardboard backing, heavy paper cover, and spiral wire binding

Graphite on cream laid paper

Black ink and colored chalk on off-white wove paper

Graphite on off-white wove paper

Black crayon on paper

Black ink, graphite, and yellow chalk on off-white wove paper

Black ink and graphite on off-white wove paper