Study of Trees in Full Foliage; verso: Study of a Tree with a Twisted Trunk

Brown ink and brown wash over traces of black chalk, on cream antique laid paper, framing line in brown ink at left and right

Opaque and transparent watercolor over graphite on parchment

Brown ink, brown wash on cream antique laid paper, framing lines in brown ink

Black and red chalk on parchment

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

Graphite with touches of black chalk on parchment

Brown ink and gray-brown and blue wash over traces of black chalk on cream antique laid paper, framing line in brown ink

Black ink, gray wash and white opaque watercolor on cream antique laid paper, prepared with light brown wash.

Brown ink, brown and gray wash and graphite, framing line in brown ink, mounted down entirely on card

Gray wash, black ink and black chalk on cream antique laid paper, framing line in graphite

Black chalk on parchment

Black chalk and gray wash on off-white antique laid paper