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

Black ink on orange wove paper with postage stamp

Graphite on darkened off-white wove paper

Red crayon on off-white wove notebook paper

Crayon on paper

Graphite on paper

Graphite on cream wove paper

Paper dots numbered in black ink and mounted on blue/white graph wove paper

Graphite on thin off-white wove paper

Watercolor over graphite on off-white wove paper

Colored crayons on paper

Brown ink and wash over graphite on buff wove paper

Graphite on cream wove paper