Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Casework revisions - rooms #220 and #216: plan, section, and elevation (1/2", 3/4", 1 1/2" and 6" = 1'-0")

Graphite on off-white wove paper

Graphite on off-white wove paper

Graphite and ink ; graphite on paper

Black and red ink on off-white Japanese paper

Graphite on off-white wove paper

Graphite on paper

Graphite on paper

Pastel and black ink? over graphite on off-white wove paper

Graphite on off-white wove paper

Black ink and graphite on off-white wove paper

Watercolor over graphite on off-white wove paper

Colored inks over graphite on off-white wove paper