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

Black ink on off-white wove paper

Black ink on hand made rag wove paper

Graphite on off-white wove paper

Graphite on paper

Ink on paper

Black ink and graphite on cream wove paper

Oil on off-white wove paper

Graphite on heavy cream wove paper

Graphite and brown ink on off-white card

Charcoal on off-white wove paper; verso: graphite

Graphite on paper

Graphite on darkened off-white wove paper