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

Colored crayons on paper

Graphite on paper

Paper

Colored marker on paper

Chalks, paint, gouache, ink, wash, and graphite on paper

Black and metallic marker on paper

Graphite and black crayon on paper

Black ink, charcoal, watercolor, and watercolor pencil on cream laid paper, edges taped

Graphite on paper

Watercolor on paper

Graphite on paper

Pastel with charcoal on paper