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

Acrylic paint and wash on off-white wove paper

Crayon on paper

Graphite on graph paper

Graphite on paper

Black ink, brown fiber-tip ink and offset photolithograph on off-white wove ppr

Graphite on off-white wove paper

Graphite on off-white wove paper

Graphite on paper

Graphite on paper

Black crayon and ink on paper

Graphite on off-white wove paper

Watercolor, black ink, pastel, and graphite on off-white wove paper