Blue ball point pen diagrams on yellow lined paper

Black ink on off-white wove paper

Crayon on paper

Graphite on translucent wove paper

Graphite on paper

Watercolor and red ink lines on white wove paper

Black crayon, fixed, on buff wove paper, mounted to modern laid paper

Black ink on machine made rag wove paper

Black ink on off-white wove paper

Graphite on paper

Black ink and graphite on thin off-white tracing paper

Black ink and graphite on off-white wove paper

Black ink and wash on tan wove paper