Untitled (stamps from Spain, left page); Untitled (pasted architectural plan for Palais des Beaux Arts de Bruxelles)

Graphite on paper

Graphite on paper

Black crayon on paper

Graphite on paper

Black pen and red marker on paper

Graphite on paper

Watercolor on paper

Orange marker on paper

Colored crayons on paper; black crayon on paper

Black and aqua crayon on paper

Black and red marker on paper

Graphite and brown watercolor on paper