Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Outlets 100 and 101, north terrace: details (3" = 1'-0" )

Oil? pastel sketches on ruled paper taken from spiral notebook

Watercolor and white gouache over graphite on off-white illustration board

Graphite on paper

Black ink on frosted mylar

Charcoal on cream wove paper

Graphite on cream wove paper

Black, brown and purple crayon on paper

Black ink on off-white wove paper

Pastel on off-white wove paper

Watercolor and poster paint over graphite on off-white wove paper

Black ink on off-white wove paper

Watercolor, brown and blue ink, colored pencil, black chalk on off-white wove paper