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

Graphite on heavy off-white wove paper

Watercolor and white gouache over graphite on off-white wove paper

Graphite on paper

Leadpoint and white chalk on off-white modern wove paper, prepared with lead white, bone ash, bone black, and rabbit skin glue

Graphite on paper

Graphite on beige lined notebook paper

Graphite on off-white wove paper mounted to another sheet of off-white wove ppr

Turpentine wash with oil over graphite on off-white wove paper

Graphite on buff wove paper

Watercolor over graphite on cream laid paper

Graphite on off-white paper

Pastel and graphite on off-white wove paper