Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Pipe railing details (1/4" , 1/2" = 1'-0" and full size)

Charcoal, oil stick, acrylic, and Liquid Paper on white wove paper

Watercolor, wax, crayon, and black ink on beige laid paper

Pastel and black chalk on off-white wove paper

Graphite on off-white wove paper

Charcoal on gray laid paper

Graphite on paper

Graphite on paper

Ink on glossy white paper

Watercolor on off-white wove paper

Graphite on beige wove paper

Off-white card

Watercolor and black ink over graphite on off-white wove paper