Study for "Planes by Colors, Large Nude"

Graphite on paper and mounted

Charcoal on blue laid paper

Black and white chalks on buff wove paper

Graphite on paper

Colored marker on paper

Black and metallic marker on paper

Brown ink and gray wash over black chalk; two overlapping rectangles in brown ink

Black fiber-tip ink, faded or discolored, on cream wove paper, verso printed with grid

Brown ink and brown and gray wash over black chalk on cream antique laid paper; verso: black chalk or crayon trial strokes and incidental stray red chalk

Black ink on off-white wove paper

Black and brown ink with brown wash, on cream wove paper, framing lines in black and red ink

Red and black marker on paper