Office and Factory Buildings, Cali, Colombia, 1945: Plot plan and elevation (1" =50')

Colored crayons on paper

Graphite on off-white wove paper

Crayon on paper

Colored pencil on buff wove paper

Graphite on off-white wove paper (two sheets taped together)

Charcoal on off-white laid paper

Graphite on thin off-white wove paper

Collage of found cardboard and crayon

Graphite on off-white wove paper

Watercolor over graphite on heavy white wove paper; verso: watercolor over graphite; some color applied and worked with a tool and fingers

Graphite on heavy off-white wove paper

Black ink on off-white wove paper (recto and verso)