Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Duct and revised coal pocket: section and details (1/2" = 1'-0")

Black ink, graphite, and yellow chalk on off-white wove paper

Graphite on off-white wove paper

Black ink on off-white wove paper

Black ink on machine made rag wove paper

Graphite on off-white wove paper

Watercolor and gouache over graphite on orange wove paper

Graphite on off-white wove paper

Graphite on off-white wove paper

Acrylic, graphite, and computer print-out on off-white wove paper

Black ink on off-white wove paper

Tempera and graphite on card

Photographs, watercolor, graphite, charcoal, black crayon, ink and marker and printed city plan on off-white wove paper