Includes:
TGA 7040/1 Typed document 'On the Mobile', June 1955, 6 pieces;
TGA 7040/2 Typed document 'On the development of the Mobile', June 1955, 13 pieces;
TGA 7040/3 Written document 'Invention - a lecture', November 1956, 13 pieces and a transcript of two excerpts from the above lecture, 2 pieces;
TGA 7040/4 Typed letter dated 23 September 1961, to Joost Baljeu. Mentions an earlier conversation between the two men regarding constructivism, 12 pieces;
TGA 7040/5 Typed notes about Fountain in Stainless Steel for Brixton Day College, 4 pieces.