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

Graphite on off-white wove paper

Watercolor over graphite on off-white wove paper

Black ink and black crayon over graphite on off-white laid paper

Graphite and gesso on paper

Watercolor over graphite on off-white wove paper

Gouache over graphite on off-white wove paper

Charcoal, oil stick, acrylic, and Liquid Paper on white wove paper

Black ink on off-white wove paper

Graphite on blue paper

Watercolor and graphite on off-white wove paper

Black conté crayon on cream wove paper

Watercolor and graphite on layered off-white wove paper