Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Interior elevations and radiator grille detail (1/4" = 1'-0" and full size)

Graphite on paper

Watercolor over graphite on off-white wove paper, mounted to off-white card

Charcoal on faded blue laid paper

Graphite on translucent wove paper

Charcoal on cream laid paper

Charcoal on cream laid paper

Graphite on cream wove paper

Ink on paper

Graphite on paper

Black ink on off-white wove paper

Graphite on off-white wove paper

Graphite on off-white wove paper