Office and Factory Buildings, Cali, Colombia, 1945: Office unit: details (3/8" and 1" = 1'-0")

Graphite and black crayon on off-white wove paper

Charcoal and black ink on off-white wove paper; verso: charcoal

Charcoal on cream laid paper

Watercolor over graphite on off-white wove paper, mounted to off-white card

Black ink and graphite on cream wove paper; verso: black ink, graphite, and red crayon

Ink on paper

Black ink, graphite and black type on commercially printed cream wove paper

Black ink on thin off-white wove paper

Charcoal on off-white laid paper

Graphite on off-white tracing paper

Black ink on off-white wove paper

Graphite on off-white wove paper