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

Crayon on paper

Black ink and wash on off-white card

Charcoal on blue laid paper

Black ink on off-white wove paper

Graphite on off-white wove paper

Black ink on off-white wove paper

Gouache, black ink, collage and thread on white wove paper; verso: blue crayon and thread

Graphite on brown wove paper

Crayon on paper

Watercolor and oil over graphite on off-white laid paper

Graphite on graph paper

Graphite on thin off-white wove paper