Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Radiator schedule and piping diagram: isometric

Transparent and opaque watercolor and graphite on white wove watercolor paper

Mixed media on paper

Graphite on paper

Ink and graphite on paper

Charcoal on off-white wove paper

Charcoal heightened with white chalk on white paper

Black ink and charcoal on cream laid paper

Watercolor, tempera, gouache, black chalk, and graphite, with touches of varnish(?) on off-white wove paper mounted to off-white-paper-covered gray board

Collage of cut colored papers mounted to three colored papers

Black ink on cream wove paper

Black crayon and blue wash on off-white wove paper

Graphite on paper