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

Crayon on paper

Black ink and gray wash over chalk on off-white wove paper

Graphite on paper

Graphite on dark cream wove paper

Watercolor and gouache on off-white illustration board

Pastel on brown cardboard?

Graphite on paper

Graphite on paper

Verso: graphite on off-white laid paper

Graphite on paper

Ink sketches on commercially lined paper

Black crayon on paper