Study of Numerals Six and Nine; verso: Study of Numerals Six and Nine

Black crayon on paper

Red and black marker on paper

Graphite on paper

Black marker on paper

Charcoal, black ink, and colored pencil on cream laid paper

Black crayon on paper

Black and colored crayons on paper

Black ink on beige wove paper

Graphite ; ink on paper

Graphite and typewritten text on paper

Black crayon on paper

Graphite on paper ; graphite and aqua crayon on paper