Office and Factory Buildings, Cali, Colombia, 1945: Revision of drawing BRGA.105.18 (1/8", 1/4", 1 1/2" and 6" =1'-0")

Graphite and white gouache on heavy cream wove paper

Graphite on off-white wove paper

Graphite on off-white wove paper

Pastel on brown paperboard

Watercolor and oil over graphite on off-white laid paper

Watercolor and white gouache on off-white wove paper

Graphite on cream wove paper

Crayon on paper and mounted

Black ink and graphite on cream wove paper

Graphite on paper

Graphite on paper

Graphite on off-white wove paper (recto and verso)