Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Typical windowsill details (full size)

Black ink on off-white wove paper

Watercolor and graphite on off-white wove paper

Graphite and ink on paper

Black ink, white gouache, graphite, and colored pencil on graph paper

Graphite on paper

Oil, powdered pigment, black crayon, and collage on heavy card

Graphite on blue wove paper

Graphite on coated off-white wove paper

Transparent and opaque watercolor on off-white wove paper

Graphite on wall

Tempera on purple construction paper

Graphite on off-white wove paper