Alexander has explored resins and color, transparency, and translucence, interested in forms that appear to emit their own light and energy. His abstract forms evidence a concern with atmosphere and landscape—the white heat of the sun or lightening over water, explosions of light filtering through trees. His 1972 print series originated as photographs taken from television screen advertisements and films. Unconventional at the time, the images presage a sampling that has become ubiquitous. The photographs were printed on an offset press, which was then, and remains, exceptional.
The artist's work is collected by the Museum of Contemporary Art, Los Angeles; the Guggenheim Museum, New York; the Metropolitan Museum of Art, New York; the Los Angeles County Museum of Art; and the Museum of Modern Art, New York.