1976.05

1976.06

## Lines in Four Directions (from the Rubber Stamp Portfolio)

1976.07

## Geometric Figures Within Geometric Figures

1976.08

## Geometric Figures Within Geometric Figures

1976.09

## Geometric Figures within Geometric Figures (Composite)

1976.10

## Geometric Figures within Geometric Figures (Composite)

1977.01

## Lines from Corners, Sides and the Center, to Points on a Grid (Black)

1977.02

## Six Geometric Figures (Circle, Square, Triangle, Rectangle, Trapezoid and Parallelogram)

1977.03

## All Double Combinations (Superimposed) of Six Geometric Figures (Circle, Square, Triangle, Rectangle, Trapezoid and Parallelogram)

1977.04

## All Double Combinations (Superimposed) of Six Geometric Figures (Circle, Square, Triangle, Rectangle, Trapezoid and Parallelogram)

1977.05

## Lines & Color. Straight, Not-Straight & Broken Lines Using All Combinations of Black, White, Yellow, Red and Blue for Lines and Intervals

1977.06

## Serial System Using Lines and Color

1977.07

## Bands of Lines in Four Directions

1977.08

## All Double Combinations (Superimposed) of Geometric Figures (Circle, Square, Triangle, Rectangle, Trapezoid, Parallelogram)

1977.09

## Bands of Lines in Four Directions in Four Colors

1977.10

## Serial System Using Lines and Color Composite

1978.01

## Lines in Four Directions (Horizontal, Vertical, Diagonal Right and Diagonal Left) and All Their Combinations. Four Colors (Yellow, Black, Red and Blue) and All Their Combinations

1978.02

## Lines In Color on Color From Corners Sides and Centers to Specific Points on a Grid

1978.03

## Lines In Color on Color From Corners Sides and Centers to Specific Points on a Grid

1978.04

## Six Geometric Figures in Three Colors on Three Colors and All Their Combinations

1978.05

## A Circle with Lines in Two Directions

1979.01

## Grids and Color

1980.01

## Color Grids. All Vertical & Horizontal Combinations of Black, Yellow, Red & Blue Straight, Not-Straight & Broken Lines

1980.02

## Six Geometric Figures & All Their Combinations

1980.03