Checkerboard Bonnet Shell (Phalium Areola)

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

Black chalk on light tan antique laid paper, framing lines in brown ink and black chalk

Brown ink and brown wash on cream antique laid paper, with a framing line in brown ink

Red chalk over graphite on cream antique laid paper, with a framing line in brown ink over red chalk

Graphite on parchment, autograph framing line in graphite

Gray wash and graphite on off-white antique laid paper

Black chalk and brown ink on cream antique laid paper

Brown ink, brown wash, and transparent watercolor on cream antique laid paper, laid down on an inlay mount, framing line in brown ink

Black chalk and gray wash on cream antique laid paper, laid down on an English (?) mount

Transparent watercolor and gray and brown wash over traces of black chalk on cream antique laid paper, framing line in brown ink

Opaque and transparent watercolor on parchment adhered to panel; thick framing line in brown watercolor

Brown ink and brown and gray wash on cream antique laid paper