Untitled (bleed-through of previous page, left page); Untitled (Configuration of tubes with color transfer marks, right page)

Charcoal on cream laid paper

Graphite and colored pencil on paper

Offset in brown wash on parchment (from the drawing on folio 22 verso); verso: graphite, autograph framing line in graphite

Black crayon on paper

Stamp ink on paper

Graphite and white chalk on blue-gray wove paper

Colored marker on paper

Ink

Black and white chalk on blue-gray wove paper

Black marker on paper

Black crayon on paper

Charcoal on cream laid paper