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

Watercolor on beige wove paper

Black ink, white gouache, and black crayon on off-white laid paper

Graphite on paper

Black ink, graphite, and yellow chalk on off-white wove paper

Colored crayons on paper

Black ink on off-white wove paper

Graphite on paper

Graphite on off-white wove paper

Matte paint over silver foil on cream wove card

Graphite on off-white wove paper

Graphite on coated off-white wove paper

Graphite, gouache, gold paint, black crayon, and incised lines on a lithograph printed in black, blue, and green, mounted on board(?)