Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Radiator recess at curved stair wall: plan, sections, and detail (3/4" and 6" = 1'-0")

Watercolor on cream wove paper

Tempera on purple construction paper

Black ink on off-white wove paper

Oil and watercolor on off-white textured wove paper

Black ink, gray wash and wax crayon on off-white wove paper

Graphite on thin off-white wove paper

Off-set pastel and watercolor on white wove paper

Black crayon on thin ivory wove paper

Black crayon on buff wove paper

Watercolor and gouache on paper

Graphite on paper

Graphite on off-white wove paper