Horoscope, 1937. This is one of Matta's early drawings; his use of vibrant color and stretched forms would come to be very common in his paintings. Matta sought to "depict the unseen realities underlying human existence by conjoining several phases of growth and evolution within a single image" (Smith and Dartnall, 12).
X-Space and the Ego, 1945. Another of Matta's drawings, but from later in his life, evidenced by the fact that strange humanoids are the subject. There is some sense of perspective and a horizon, but overall an unclear sense of space and position, blending dimensions into each other.
A Grave Situation, 1946. A figure is trapped in a cluttered space of planes and supports. The work is intended as a commentary on the human condition, and the central character is based on the forms of ancient totems.
Coigitum, 1972. This is my favorite work of Matta's. It has a sense of both chaos and order, and one feels that the scene could be happening on a cosmic scale, lightyears wide, or it could just as easily be occurring within a single cell. The simple color palette and mix of geometric and organic forms are extremely pleasing, and the amount of detail make it very easy to get lost in the painting.
MATTA, Centre Georges Pompidou, Musee naitonal d'art moderne, 1985. (anthology)
Matta in America, Paintings and Drawings of the 1940s, Smith and Dartnall, 2001.