Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Pipe sleeve and footing, dining terrace: sections (3" = 1'-0")

Black, red, and white chalk, brown wash, and charcoal on off-white laid paper

Graphite on off-white wove paper

Watercolor and graphite on white wove paper

Black ink on tan wove paper

Watercolor and white gouache over graphite on buff laid paper

Black crayon and ink on paper

Pastel on thin off-white wove paper

Charcoal, white pencil, red watercolor (or ink) on off-white wove paper

Transparent and opaque watercolor on white wove paper

Graphite sketches on paper

Graphite, black ink, and yellow chalk on darkened off-white wove paper

Graphite on off-white wove paper