Office and Factory Buildings, Cali, Colombia, 1945: Elevation (1/16" = 1'-0")

Watercolor and graphite on cream wove paper

Watercolor and black chalk (?) on cardboard

Graphite on paper

Graphite on gray-green wove paper

Opaque watercolor and graphite on cream wove paper mounted to cardboard

Black crayon, black chalk, and ink splatters on handmade white wove paper

Incised line and Aquarelle on white wove paper

Charcoal and graphite on off-white laid paper

Colored crayons on paper

Graphite on off-white wove paper

Oil, watercolor and graphite on thin off-white wove paper

Black chalk and charcoal on off-white laid paper