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

Charcoal on off-white wove paper; verso: graphite

Charcoal, gouache (or poster paint), and crayon on buff wove paper

Black lithographic crayon on off-white wove paper

Watercolor on paper pulp and wire grid

Black ink on off-white wove paper

Black ink and pen on commercially ruled, hole punched paper

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

Black crayon on paper

Charcoal on blue laid paper, faded

Black ink on tan wove paper

Graphite on ivory laid paper

Graphite on paper