Proof of the Pythagorean Theorem (Euclid) by Crockett Johnson, next to the mathematical proof it was based on.
Perspective (Alberti) by Crockett Johnson.
Equal Areas, Their Triangular Square Root and Pi, by Crockett Johnson
Construction of Heptagon by Crockett Johnson, based on his own formulas.
Agnes Martin, "Praise," 1976, rubber stamp in pink on Dalton Natural Bond paper from a portfolio of 13 rubber stamp prints, each stored in a separate envelope, National Gallery of Art, Washington, Gift of Bob Stana and Tom Judy
Karl Gerstner, "Untitled (from the Color Levels portfolio)"
Karl Gerstner, "No. 3 from Color Sounds III"
Jean (Hans) Arp, "Soleil recerclé (Couverture I)"
Jules Olitski, "Graphite Suite I (Yellow/Green with Flesh)"
Robert Mangold. "Curved Plane/Figure II"