Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Lighting detail at window head (full size)

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

Black ink, graphite, black ball-point ink and collage on off-white wove paper

Graphite on off-white wove paper

Tempera on purple construction paper

Graphite on off-white wove paper (recto and verso)

Black crayon on cream wove paper; verso: red and black crayon

Watercolor on off-white wove paper

Gouache and black ink over graphite on gray-blue wove paper

Black ink on off-white wove paper

Black ink, graphite, and yellow chalk on off-white wove paper

Charcoal on blue laid paper

Graphite on buff wove paper; verso: black ink