Where can I find original records and other information about the Flannan Lighthouse disaster?

Most of the information about the event is contained in the records of the Northern Lighthouse Commission, at the National Records of Scotland. In addition, most national newspapers at the time covered the story. The Northern Lighthouse Commission records (all at the National Records of Scotland) which relate to the incident are: NLC3/1/1 Secretary’s department correspondence and reports (1 Jan 1901 to 31 March 1902) includes: a letter from County Clerk, Dingwall, granting permission to place a winch on Breascleit Pier; copy telegrams and letters from the master of the Hesperus and others reporting the disaster and steps taken; correspondence with the Board of Trade and Crown Office; reports by Superintendent Muirhead and others; correspondence regarding insurance payments, pensions and the deceased keepers’ families; letters and reports regarding analysis of water in the well at Breascleit and an inspection voyage in1901. NLC 2/1/87-88, minute books of the Commissioners (1899-1903) includes minutes concerning the lighthouse in the years leading up to the disaster, the disaster itself, and subsequent enquiries, reports and events.