Office and Factory Buildings, Cali, Colombia, 1945: Perspective

Graphite on off-white wove paper mounted to matboard

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

Oil on heavy cream wove paper

Charcoal on faded blue laid paper

Graphite on off-white wove paper

Graphite on paper

Black ink on off-white wove paper

Black chalk on off-white laid paper

Carbon paper transfer, graphite and white chalk on cream wove paper

Gouache, black ink, and collage on heavy off-white wove paper

Watercolor over graphite on off-white wove paper

Black crayon on off-white wove paper