Barotseland - Constitution and Politics: Correspondence between the Federal Prime Minister, the Federal Minister of Law, the Litunga of Barotseland and the Barotse Native Government, and the Governor of Northern Rhodesia (Zambia) regarding constitutional and political developments, with related memoranda and opinions of counsel and of the Federal Minister of Law (for the Litunga and the Barotse National Council) on proposed constitutional changes in Northern Rhodesia (Zambia), 1961-1963