Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Study joist layout: plan (1/2" = 1'-0")

Watercolor over graphite on off-white laid paper

Watercolor over graphite on off-white wove paper; verso: graphite

Black ink and white gouache over graphite on off-white wove paper

Black crayon and ink on paper

Black ink and charcoal on beige wove paper

Black ink and graphite on heavy off-white wove paper

Graphite on tracing paper

Crayon on paper

Graphite on off-white wove paper

Graphite on off-white wove paper

Graphite on off-white wove paper

Graphite and wash on two sheets of accordian-folded laminated Japanese paper, bound in a book