Addition Study No. 1
Pencil and watercolor on paper
20 x 20
$ 1,200

Addition
Pencil and watercolor on paper
20 x 28
$ 2,600

Kinds of Puzzles No. 1
Pencil on paper
24 x 18
$ 1,600

Playground
Pencil and watercolor on paper
16 x 28
$ 1,200