Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Detail of waterstop at covered ramp: elevations and section (1/4" = 1'-0" and full size)

Black ink on off-white wove paper

Watercolor and black chalk (?) on cardboard

Graphite on white wove paper

Black ink on off-white wove paper

Graphite on paper

Black ink on white wove paper

Graphite on off-white wove paper

Black ink and yellow chalk on translucent buff wove paper

Ink and graphite on paper

Graphite on cream wove paper

Oil on white prepared paper

Watercolor on off-white wove paper