Study of a skyscraper: elevations and plan; verso: Building design

Black and green crayon on paper

Colored marker on paper

Graphite and colored pencil on paper

Charcoal on tan wove paper

Graphite on paper

Graphite on paper

Watercolor and graphite on off-white wove paper mounted to off-white card

Graphite on paper

Black ink on cream wove paper

Colored marker, black pen, b/w photocopy, and adhesive on paper

Black crayon on paper

Black marker and tape on paper