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

Watercolor over graphite on heavy off-white wove paper

Graphite on off-white wove paper

Watercolor and white gouache on off-white wove paper, mounted to cardboard

Black ink and white-gray gouache on grayish-white textured wove paper

Black ink and colored chalk on off-white wove paper

Graphite on paper

Collage on board

Turpentine wash with oil on white board

Watercolor and graphite on white wove paper

Graphite on off-white wove graph paper

Graphite on cream wove paper

Watercolor on off-white wove paper