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

Graphite on off-white wove paper

Charcoal and graphite on off-white laid paper, squared in graphite

Colored crayons ; black crayon on paper

Watercolor and graphite on paper

Graphite on paper

Black ink and gray wash over chalk on off-white wove paper

Turpentine wash with oil on off-white wove rag paper

Leather bound sketchbook

Graphite on paper

Brown ink on off-white wove paper

Black ink and watercolor on ivory wove paper

Charcoal, oil stick, acrylic, and Liquid Paper on white wove paper