Office and Factory Buildings, Cali, Colombia, 1945: Plot plan (1" =50')

Black and red ink on hole-punched squared graph paper in mylar sheet protector

Black ink on folded cream colored paper

Graphite on paper

Graphite, gouache, crayon, black ink and collage on thin cream wove paper

Graphite on darkened off-white wove paper

Watercolor and white gouache on buff card

Graphite on cream wove paper

Watercolor and graphite on off-white wove paper

Graphite on brown wove paper

Gray wash over graphite on heavy off-white wove paper

Black ink and graphite on off-white wove paper

Watercolor and graphite on layered cream wove paper