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

Black ink on buff wove paper

Black ink on off-white tracing paper

Charcoal on paper

Black ink on tan wove paper

Graphite on cream wove paper

Graphite and colored chalk on brown wove paper

Black ink on off-white wove paper

Black ink over graphite on off-white laid paper

Ink and gouache on paper

Black ink on tan wove paper (recto and verso)

Black and brown marker on graph paper

Graphite on thin off-white wove paper