Office and Factory Buildings, Cali, Colombia, 1945: Elevation (1/16" = 1'-0")

Black ink over graphite on cream wove paper

Watercolor on cream wove paper

Charcoal on blue laid paper

Graphite on thin off-white wove paper

Watercolor and white gouache over graphite on heavy off-white wove paper

Graphite on paper

Graphite on paper

Crayon on paper

Black crayon on off-white laid paper

Watercolor, white gouache, and black ink over graphite on off-white wove paper

White hammered marks on orange transfer paper

Black ink on off-white wove paper