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

Graphite on off-white wove paper mounted to off-white wove paper

Graphite on off-white wove paper

Black ink on thin off-white wove paper

Black ink and graphite on off-white wove paper

Graphite on buff wove paper

Watercolor and gouache on off-white illustration board

Ink, colored crayon, gouache, and graphite traces on off-white laid paper

Brown chalk on off-white wove paper

Black crayon and graphite on cream wove paper

Graphite on off-white tracing paper

Pastel on black cardboard?