Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Outside stairs at servant porch; exterior door entry: plan, sections, elevations, details (1/2" , 1 1/2" , and 6" = 1'0")

Watercolor on white wove paper

Watercolor on cream wove paper

Black ink on blue-ruled white graph paper

Watercolor on off-white wove paper

Colored crayons on paper

Dark red-brown conte crayon on white wove paper

Watercolor and graphite on off-white wove paper

Graphite on tan wove paper

Watercolor and graphite on white wove paper

Graphite on paper

Graphite on white wove paper

Black ink on folded cream colored paper