Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Third floor and roof plans (1/4" = 1'-0")

Graphite on off-white wove paper

Graphite on paper

Watercolor and graphite on cream wove paper; verso: graphite, black ink, colored pencil

Watercolor and white gouache over graphite on off-white illustration board

Watercolor over graphite on off-white wove paper

Watercolor and white gouache over graphite on off-white wove paper?

Silverpoint on illustration board

Black ink and gray wash on cream laid paper

Black ink, gray and white gouache, graphite, spots of turquoise ink, on cream wove paper; verso: black ink

Black wax crayon on tan wove paper

Graphite on paper

Blue ink on paper