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")

Black ink and charcoal on cream laid paper

Graphite on off-white wove paper

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

Colored crayons on paper

Watercolor on off-white wove paper

Graphite on paper

Graphite on buff wove paper

Graphite on off-white wove paper

Watercolor over graphite on heavy off-white wove paper

Pastel on white paper

Watercolor and graphite on white wove paper

Graphite on off-white wove paper