Variant (two grays, two blues, orange, and pink)

Prefacio, a new version (black lines on gray)

Untitled

Untitled (grays)

Variant (purples and grays)

Skyscrapers (blacks on gray)

Untitled (mustard and gray squares)

Variant (green, yellow-oranges, and gray)

March, from the portfolio "The Twelve Months"

[Sicherheit Recht Ordnung]

Untitled (brown, blue, oranges, mustard green)

Untitled (gray on green, "four upright rectangular backgrounds taken from folder 1 through 5")

Untitled (light gray and black on gray)