untitled, 1974, charcoal / acrylic on paper, 30 x 22"

untitled, 1974, charcoal / acrylic on paper, 30 x 22"

untitled, 1974, charcoal / acrylic on paper, 30 x 22"

untitled, 1974, charcoal / acrylic on paper, 30 x 22"

three into four, 1979, charcoal on paper, 22 x 30"

three into four, 1979, charcoal on paper, 22 x 30"

Builder, 1993, charcoal on paper, 30 x 22"

Builder, 1993, charcoal on paper, 30 x 22"

untitled (branches), 1993, charcoal on paper, 40 x 30"

untitled (branches), 1993, charcoal on paper, 40 x 30"

Boat, 1997, charcoal on paper

Boat, 1997, charcoal on paper

untitled , 1997, charcoal on paper, 40 x 30"

untitled , 1997, charcoal on paper, 40 x 30"

for Michelangelo, 1997, charcoal on paper, 30 x 44"

for Michelangelo, 1997, charcoal on paper, 30 x 44"

Spiral, 1999, charcoal on paper, 30 x 40"

Spiral, 1999, charcoal on paper, 30 x 40"

Trans-figure, 2002, charcoal on paper

Trans-figure, 2002, charcoal on paper

Pasture, 2002, charcoal on paper, 30 x 40"

Pasture, 2002, charcoal on paper, 30 x 40"

sea building, 2005, charcoal on paper, 30 x 40"

sea building, 2005, charcoal on paper, 30 x 40"

Swoon, 2005, charcoal on paper, 30 x 40"

Swoon, 2005, charcoal on paper, 30 x 40"

Athena, 2005, charcoal on paper, 30 x 40"

Athena, 2005, charcoal on paper, 30 x 40"