Office and Factory Buildings, Cali, Colombia, 1945: Office unit: plan, elevations, section (1/16" and 1/8" = 1'-0")

Watercolor, gouache, and acrylic(?) on white wove paper

Black crayon on paper

Black ink and pen on paper

Colored pencil, graphite, and watercolor on thin off-white wove paper

Black felt-tipped pen on yellowed newsprint paper

Acrylic, graphite, and computer print-out on off-white wove paper

Watercolor on off-white card

Graphite with collage element on paper

Black ink on heavy off-white wove paper

Watercolor and white gouache over graphite on cream wove paper; verso: graphite

Sketchbook with cardboard backing, heavy paper cover, and spiral wire binding

Graphite on off-white wove paper