Checkerboard Bonnet Shell (Phalium Areola)

Black chalk on beige antique laid paper, framing line in brown ink and partial framing line in black chalk

Transparent and opaque watercolor over graphite on off-white antique laid paper

Black chalk on Asian paper

Brown ink, brown and gray wash, and red chalk on cream antique laid paper, framing line in brown ink

Brown ink, gray wash, and graphite on cream antique laid paper, framing line in brown ink

Brown ink on antique laid paper probably toned with light brown wash, framing line in brown ink

Brown ink, brown wash, black chalk, and later touches of white chalk on light tan antique laid paper prepared with light tan wash, partial framing line in black chalk at upper edge

parchment

Black chalk and gray wash on cream antique laid paper, partial framing line in black chalk

Brown ink, brown wash, and white opaque watercolor on cream antique laid paper

Gouache and watercolor

Black chalk, colored washes on cream antique laid paper