Sketch for the 1967 performance at the Walker Art Center entitled "The Proliferation of the Sun"

Blue marker on paper

Colored marker on paper

Graphite on paper

Colored marker on paper

Graphite on paper

Black and red marker on paper

Black crayon on paper

Black crayon on paper, mounted

Ink and graphite on paper

Graphite on paper

Black crayon on cream wove paper

Colored crayons on paper