Study of a Wolf's Head; verso: Partial Study of an Ox

Black and white chalk on red-brown laid paper

Black ink on cream wove paper

Black ink and gray wash on off-white antique laid paper

Ink and graphite on commercially ruled, hole punched paper

Black marker on paper

Colored and metallic marker and black pen on paper

Black ink on paper

Ink on paper

Black marker, adhered paper, and blue pen on paper

Black crayon on buff wove paper

Graphite and colored pencil on paper

Graphite and white chalk on buff paper, darkened