Report by Sir Frederick Lugard on the Amalgamation of Northern and Southern Nigeria, and Administration, 1912-1919; Documents: Extract from Sir Frederick Lugard’s ‘Strictly Confidential’ Memorandum on the Administration of Nigeria submitted to the Secretary of State, May 1905; C. L. Temple’s ‘Confidential Minute’ on his Scheme for the Amalgamation of Nigeria, February 1913; Sir Frederick Lugard’s ‘Confidential’ Proposals on the Amalgamation of Nigeria submitted to the Colonial Office, May 1913; Financial and Staff Proposals for the First Unified Estimates of Nigeria, 1913; Governor-General’s Speech and His Majesty’s Telegram, Amalgamation Day, 1 January 1914; The Nigerian Press and Amalgamation, 1919: Two Editorials.