1853 The company was incorporated.
1863 The line opened on 31st December.
1908 The line is 82.5 miles in length. 
July 1953 Railway line closed but continued as bus services under the name Lough Swilly Bus Co until April 2014, becoming the oldest railway company established in the Victorian era to continue trading as a commercial concern into the 21st century.
- SWEENEY, Frank: The Letterkenny & Burtonport Extension Railway 1903-47: Its Social Context and Environment.
- FLANDERS, Steve in association with Joe Begley and Hugh Dougherty: The Londonderry & Lough Swilly Railway - an Irish railway pictorial. 1997 / ISBN: 1857800745 ; 1857800737
- BOYD, James I. C.: The Londonderry & Lough Swilly Railway. Truro, Cornwall: Bradford Barton, 1981
- MILLAR, G. Irvine: Lough Swilly Buses - eighty years of service by the Londonderry and Lough Swilly Railway Company. Newtownards, Co. Down, Northern Ireland : Colourpoint Books, 2008 / ISBN: 9781906578275
- PATTERSON, Edward M.: The Londonderry & Lough Swilly Railway : a history of the narrow-gauge railways of North-West Ireland. Newton Abbot : David & Charles, 1988 (1964)
- SWEENEY, Frank: That Old Sinner - the Letterkenny & Burtonport extension Railway. Dublin : Irish History Press, 2006 / ISBN: 9780955318405
Sources of Information