Branch and Mathematical Notations; verso: Branch and Pentagon

Black chalk, possibly lightly stumped in places, on off-white antique laid paper; verso: black chalk figure, red chalk shrine

Brown ink on off-white antique laid paper

Brown ink, black chalk, scratchwork at the proper left eye and nose, on cream antique laid paper, mounted down, two brown ink framing lines

Gray ink and brown wash over graphite or black chalk, incised, with a framing line in brown ink, on cream antique laid paper

Brown ink and brown and gray wash over black chalk on cream antique laid paper, framing lines in black ink over black chalk

Brown ink on parchment, mounted at two sides

Opaque watercolor on parchment, scored around perimeter; verso: green transparent watercolor

Brown ink on light tan antique laid paper

Brown ink and gray wash over graphite, squared in graphite, on light tan antique laid paper

Brown ink and brown wash over black chalk, partial squaring in black chalk, on cream antique laid paper, laid down

Black and red chalk on light brown toned antique laid paper

Brown ink, squared in graphite, on cream antique laid paper