Concerning constitutional advance, the 1961 Referendum, and the inter-relatedness of Southern Rhodesian (Zimbabwean) and Federal constitutional matters; dissolution of the Federation (Zimbabwe, Zambia, and Malawi) and the independence of Southern Rhodesia (Zimbabwe). Record of meetings of the Federal High Commissioner in London with the First Secretary of State (2 and 17 May 1963). Extracted from Secret Registry file CX 3/3.