Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Change in stone chimney over 220

Transparent and opaque watercolor and graphite on white wove paper

Graphite on off-white tracing paper

Graphite on Mylar

Graphite on paper

Graphite and blue ink on yellow lined wove notebook paper

Pastel on composition board

Black ink, charcoal, and watercolor pencil on cream wove paper

Watercolor, with extra binder, over graphite on cream laid paper

Graphite on paper

Watercolor on off-white wove paper

Graphite on off-white wove paper

Graphite on cream wove paper