Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Exterior stone through rear entrance; part of southeast elevation (1/2" = 1'0")

Pastel on cardboard

Graphite on off-white wove paper

Graphite on off-white wove paper

Graphite and blue and black crayon on off-white wove paper

Black ink and graphite on off-white wove paper

Black and white chalk on red-brown laid paper

Watercolor over charcoal? on off-white wove paper

Watercolor and white gouache on off-white wove paper

Watercolor and gouache on white wove paper

Watercolor over graphite on cream card

Watercolor and graphite on cream wove paper