T-3-1-4-4
T-4-1-4-4-1 1978
T-4-1-4-4-2
T-4-1-4-4-3
T-4-1-4-4-4 Box I, 1973
T-4-1-4-4-5 Light Field
T-4-1-4-4-6 Light Field, Rottweil, 1976
T-4-1-4-4-7 Box III, 1973
T-4-1-4-4-8 Sun Mirror, 1974
T-4-1-4-4-9 Bricks, 1974
T-4-1-4-4-10 Sun Mirror, 1974
T-4-1-4-4-11 Attachment 3, 1974
T-4-1-4-4-12 Light Brick, Rottweil, 1976
T-4-1-4-4-13 Attachment 1, 1974
T-4-1-4-4-14 Outline, 1971
T-4-1-4-4-15 Celeste, 1971
T-4-1-4-4-16 Unity 1974
T-4-1-4-4-17
T-4-1-4-4-18 Sun Circle, 1974
T-4-1-4-4-19 Attachment 2, 1978
T-4-1-4-4-20 Light Box 1 + 2, 1970
T-4-1-4-4-21 Outline, Rottweil, 1976