Convex and Concave 1955 Lithograph

Liberation 1955 Lithograph

Rind 1955 wood engraving and woodcut in black, brown, blue-grey and grey, printed from 4 blocks

Depth 1955 wood engraving in brown-red, grey-green and dark brown, printed from 3 blocks

Three Worlds 1955 Lithograph

Swans 1956 wood engraving

Bond of Union 1956 Lithograph

Print Gallery 1956 Lithograph

Division 1956 woodcut, second state

Smaller and Smaller 1956 wood engraving and woodcut in black and brown, printed from 4 blocks

Plane Filling II 1957 Lithograph

Whirlpools 1957 wood engraving and woodcut, second state, in red, grey and black, printed from 2 blocks

Belvedere 1958 Lithograph

Sphere Surface with Fish 1958 woodcut in grey, gold and reddish-brown, printed from 3 blocks

Spher Spirals 1958 woodcut in grey, black, yellow and pink, printed from 4 blocks

Flatworms 1959 Lithograph

Circle Limit II 1959 woodcut in red and black, printed from 2 blocks

Circle Limit III 1959 woodcut, second state, in yellow, green, blue, brown and black, printed from 5 blocks

Ascending and Descending 1960 Lithograph

Circle Limit IV 1960 woodcut in black and ocre, printed from 2 blocks

Moebius Strip I 1961 wood engraving and woodcut in red, green, gold and black, printed from 4 blocks

Waterfall 1961 Lithograph

Moebius Strip II 1963 woodcut in red, black and grey-green, printed from 3 blocks

Knots 1965 woodcut in red, green and brown, printed from 3 blocks

Path of Life III 1966 woodcut in red and black, printed from 2 blocks

Metamorphosis III 1967-1968

woodcut, second state, in red, green and reddish-brown,

printed from 33 blocks on 6 combined sheets,

mounted on canvas

partly colored by hand

Snakes 1969 woodcut in orange, green and black, printed from 3 blocks