1921 pencil & crayon on paper self-portrait bookplate.
Ex-Libris CW Rolch
1921 Pen, pencil and crayon on paper.
1933 Watercolor and pencil
Gaia With Yellow Shawl
1947 Watercolor and pencil on paper
Experiments in Relativity
1948 Pastel on paper
Pencil and watercolor
c.1932 Pencil and watercolor
Watercolor and pen and ink
Experiment in Relativity No 11
1932 Watercolor and pencil Portrait of Helen Dalton 1904-1983
1920 Pen and ink and watercolor
c1925 Watercolor and pencil
Yantra of Yearning,
1948 Pastel and pencil on panel Michael Staley Collection.