Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Stairs at swimming pool: plans, elevations, sections (3/4" =1"-0" )

Graphite on paper

Graphite and orange chalk on blue-green laid paper

Charcoal on cream laid paper

Black ink on off-white wove paper

Watercolor on off-white wove paper

Graphite on off-white wove paper

Crayon and graphite on brown wove paper

Graphite on cream wove paper

Ink and graphite on commercially ruled, hole punched paper

Black ink on off-white wove paper

Black ink on off-white wove paper

Graphite on off-white wove paper, mounted to off-white cardboard