'The Cubic Equation with three real roots: Its geometrical Solution and the Machine that solves it', 1956. (Delivered as lecture to the Nobel Conference in 1954.) Includes: 2 corrected MSS., specification of machine, and a German translation of the article. Miscellaneous mathematical calculations on cubic ratios and cubic equations, n.d. Miscellaneous mathematical calculations, n.d. Two envelopes of drawings, diagrams, and figures for work on 'Kissing Circles';…