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

Watercolor and gouache on ivory wove paper

Black ink on slide film, hand colored

Black ink on tan wove paper

Watercolor over graphite on off-white wove paper

Crayon on paper

Black crayon on paper

Graphite on off-white wove paper

Black ink and gouache on off-white wove paper

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

Watercolor and graphite on off-white wove paper

Graphite on paper

Graphite on paper