Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Longitudinal section (1/4" =1"-0" )

Black ink and charcoal on cream laid paper

Graphite, black ink, blue and yellow chalk on off-white wove paper

Black fiber-tip pen, graphite, green and orange colored pencil on tracing paper

Graphite on darkened off-white wove paper

Graphite on darkened off-white wove paper, mounted to buff cardboard

Watercolor and graphite on white wove paper

Graphite on paper

Xerox toner on paper

Graphite on off-white wove paper

Colored inks over graphite on off-white wove paper

Charcoal on off-white laid paper

Charcoal on cream laid paper