Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Lights - roof terrace, third floor: elevation and detail (1/4" and 3" = 1'-0")

Black ink on off-white wove paper; verso: graphite

Charcoal on blue laid paper

Black and grey wash on prepared white wove paper

Black and white tempera on acetate laid over blue and brown tissue paper

Gouache on cream wove paper

Watercolor on off-white wove paper

Watercolor and graphite on cream wove paper

Black ink on tan wove paper

Charcoal on joined and folded off-white paper

Blue ink over photocopy

Graphite on translucent wove paper

Graphite on paper