Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Details of main stair (1/2" , 3" = 1'-0" and full size)

Charcoal, red and white chalk on gray laid paper

Watercolor

Charcoal on blue laid paper

Graphite on off-white wove paper

Graphite on paper

Black ink on tan wove paper

Black ink and charcoal on cream laid paper

Red, brown, black and white conté crayon on gray wove paper

Charcoal on cream laid paper

Sketchbook with blue- and black-fabric-covered cardboard covers

Graphite on paper

Pastel and black ink? over graphite on off-white wove paper