Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Radiator schedule and piping diagram: isometric

Graphite on cream wove paper

Gouache and charcoal (?) on cream wove paper

Colored crayons on paper

Black ink on slide film, hand colored

Black chalk on tracing paper

Graphite on paper

Black ink and wash over graphite on cream wove paper

Graphite on heavy cream wove paper

Oil and crayon on cream wove paper

Graphite and blue ink wash on cream wove paper

Black crayon on blue-flecked cream laid paper

Acrylic paint on paper