Four Birds; verso: Two Wild Ducks

Black chalk on off-white antique laid paper, adhered to gray antique laid paper

Green leather-covered sketchbook

Black and white chalk on discolored blue antique laid paper, squared in black chalk

Watercolor and black ink over traces of graphite on off-white antique laid paper, adhered to cream antique laid paper

Black, red, and white chalk on tan antique laid paper, laid down on cream antique laid paper

Red chalk on oiled antique laid paper

Red and brown chalk on cream antique laid paper, laid down on cream antique laid paper with blue paper adhered to face

Black ink, brown wash, and watercolor on cream antique laid paper, adhered to a decorative paper edge

Black and white chalk, and black ink, with touches of white gouache, on blue antique laid paper, framing lines in black chalk, squared in black chalk

Red and white chalk over traces of black chalk, laid down on a decorated mount

Red chalk with traces of graphite, and guidelines in red chalk and graphite on cream antique laid paper, framing lines in red chalk, laid down on cream antique laid paper with blue antique laid paper border adhered to face