Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Details of main stair (1/2" , 3" = 1'-0" and full size)

Graphite on off-white wove paper

Watercolor over graphite on off-white wove paper

Graphite on paper

Graphite on cream laid paper

Black ink, gray wash over graphite on heavy cream wove paper

Watercolor on off-white wove paper

Graphite on paper

Black ink and charcoal on cream laid paper

Oil over graphite on off-white wove paper

Graphite on paper

Charcoal on off-white laid paper

Black ink and graphite on off-white wove tracing paper