Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Receivador in rear door #101: elevation, section, and detail (1" =1'-0")

Graphite on off-white wove paper (recto and verso)

Graphite and graphite wash on layered translucent vellum paper

Graphite on paper

Brown ink on pink laid paper

Black crayon and white gouache on blue laid paper

Sketchbook with black-and-white marbled cardboard covers

Watercolor over graphite on off-white wove paper; verso: graphite

Graphite on off-white wove paper

Watercolor and graphite on cream wove paper

Colored crayons on paper

Graphite on paper

Black crayon on cream laid paper