Office and Factory Buildings, Cali, Colombia, 1945: Office unit: construction and millwork details (1/4", 1", 1 1/2" and 6" = 1'-0")

Graphite on cream wove paper, mounted on heavy cream wove paper

Graphite on ivory wove paper

Graphite on paper

Graphite on paper

Watercolor on off-white wove paper

Charcoal on off-white laid paper

Black crayon on paper

Ink on paper

Pastel on paper

Gouache on off-white wove paper

Bronzepoint and lead white on off-white modern wove paper, prepared with calcined bone, lead white, vermilion, and rabbit skin glue

Graphite on off-white wove paper