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

Black ink, watercolor, and charcoal on cream wove paper

Graphite on paper

Watercolor and graphite on off-white wove paper

Graphite on Mylar

Watercolor on off-white wove paper mounted to buff wove

Graphite on white wove translucent paper

Graphite on off-white wove paper

Graphite and charcoal on off-white wove paper; verso: graphite

Black ink, charcoal, and watercolor pencil on cream laid paper, edges taped

Graphite and graphite wash on cream wove paper

Charcoal and black ink on cream laid paper