Branch and Mathematical Notations; verso: Branch and Pentagon

Brown ink and brown wash over graphite on cream antique laid paper

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

Brown ink on off-white antique laid paper; verso: graphite

Black and brown ink, brown wash, and black chalk on cream antique laid paper, partial framing line in graphite

Brown ink, brown wash, and white and gray opaque watercolor over black chalk on off-white antique laid paper, partial framing line in graphite and mounted overall to wove paper

Violet ink on cream antique laid paper, framing line in brown ink and black chalk

Black ink, gray and brown wash, white, gray and yellow opaque watercolor, and black and red chalk on off-white antique laid paper, framing line in brown ink, mounted overall

Brown ink, brown and gray wash, and black chalk over graphite on cream antique laid paper (?), partial framing line in brown ink, mounted overall to cream antique laid paper with gold leaf remnants from a previous mount; verso: red chalk and black chalk or graphite

Black, red, and white chalk, brown wash on cream antique laid paper, top trimmed to an arch, mounted overall

Brown ink and gray and blue wash over black chalk on off-white antique laid paper, partial framing line in graphite laid down

Gouache and watercolor on cream antique laid paper

Brown ink, brown wash, white opaque watercolor and red chalk on oiled (?) antique laid paper