Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Exterior door to roof terrace #308 and flashing details (3" =1"-0" and full size)

Watercolor on off-white wove paper

Collage with colored papers on cream wove paper

Charcoal and graphite on off-white laid paper, verso: charcoal

Black ink, watercolor, and charcoal on off-white laid paper

Black ink on cream wove paper

Ink sketches on commercially lined paper

Graphite on paper

Black ink and graphite on thin buff wove paper

Black ink on off-white wove paper

Watercolor over graphite on off-white illustration board

Charcoal, graphite wash and graphite with polyester resin moulded hand, string, paintbrush and wooden ruler on off-white wove paper

Graphite on paper