Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Pipe sleeve and footing, dining terrace: sections (3" = 1'-0")

Black crayon and ink on paper

Watercolor over graphite on off-white wove paper

Charcoal on off-white wove paper

Watercolor on off-white wove paper

Watercolor on off-white wove paper

Graphite and watercolor on bristol board

Colored crayons ; black and yellow crayons on paper

Graphite on heavy off-white card

Graphite on off-white wove paper

Black ink on cream wove paper

Black ink and black watercolor on tan wove paper

Graphite on cream colored-paper industrially-lined paper in a wire bound notebook with printed, coded, brown cardboard.