Back in Holland 1941-1954 Fish 1941 woodcut in 3 tonesof grey-green, printed from 3 blocks Plane-filling Motif with Reptiles 1941 woodcut Verbum 1942 Lithograph second state Reptiles 1943 Lithograph Ant 1943 Lithograph Blowball 1943 wood engraving intaglio-printed Blowball 1943 wood engraving Encounter 1944 Lithograph Balcony 1945 Lithograph Doric Columns 1945 wood engraving in black, brown and blue-green,printed from 3 blocks Three Spheres I 1945 wood engraving Diploma Tijdelijke Academie, Eindhoven 1945 woodcut 4th state Magic Mirror 1946 Lithograph Three Spheres II 1946 Lithograph Horseman 1946 woodcut in red, black and grey, printed from 3blocks Mumified Frog 1946 Mezzotint, 3rd state Eye 1946 Mezzotint, 7th and final stage New Year's greeting-card 1947 woodcut Gallery 1946 (1st state) till 1949 (further states), Mezzotint, 4thstate Other World 1947 wood engraving and woodcut in black, reddishbrown, printed from 3 blocks Up and Down 1947 Lithograph in brown Drawing Hands 1948 Lithograph Dewdrop 1948 Mezzotint Sun and Moon 1948 woodcut in blue, red, yellow and black, printedfrom 4 blocks Study for Stars 1948 woodcut Stars 1948 wood engraving Stars 1948 wood engraving New Year's greeting card 1949 woodcut Plane-filling Motif with Birds 1949 wood engraving Regular Division of the Plane with Birds 1949 wood engraving Sea-shells 1949 Mezzotint 1st state Fish and Frogs 1949 wood engraving Double Planetoid 1949 wood engraving in green, dark blue black andwhite, printed from 4 blocks, second state Order and Chaos 1950 Lithograph Rippled Surface 1950 Linoleum cut in black and grey-brown, printedfrom 2 blocks Devils (vignette) 1950 wood engraving Predestination 1951 Lithograph Plane Filling I 1951 Mezzotint Curl-up 1951 Lithograph House of Stairs 1951 Lithograph Two Intersecting Planes 1952 woodcut in green, brown and black,printed from 3 blocks Puddle 1952 woodcut in black, green and brown, printed from 3blocks Gravity 1952 Lithograph and watercolor Concentric Rinds 1953 wood engraving Concentric Rinds 1953 wood engraving Relativity 1953 Lithograph Spirals 1953 wood engraving in black and grey, printed from 2blocks Bookplate A.R.A. Wertheim 1954 woodcut Tetrahedral Planetoide 1954 woodcut in green and black, printedfrom 2 blocks