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

Black and white chalk on darkened buff laid paper

Watercolor over graphite on off-white wove paper

Ink and graphite on paper

Watercolor and ink on a postcard

Mixed media on paper

Black and red inks and graphite on tracing paper

Gouache on cream wove paper

Pastel on brown pastel board

Black ink, graphite, and yellow chalk on thin buff wove paper

Watercolor and white gouache on off-white wove paper

Black ink on white wove paper

Black ink and graphite on pale gray laid paper; verso: graphite