Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: General layout of mechanical and boiler equipment: plan and sections (1/4" = 1'-0" )

Charcoal on cream laid paper

Watercolor on off-white wove paper

Watercolor on off-white wove paper

Charcoal and black ink on cream wove paper

Charcoal on off-white laid paper

Graphite on paper

Graphite on cream wove paper

Black ink on off-white wove paper

Watercolor over graphite on off-white wove paper

Charcoal on paper

Tempera on purple construction paper

Watercolor on cream wove paper