REFERENCES
- Andrew, J. H., Stein, J. L., Tann, J. and MacLeod, C. 'The Transition from Timber to Cast Iron Working Beams for Steam Engines', Transactions of the Newcomen Society 70, 1998–99, p. 197.
- The London Metropolitan Archives (LMA) hold all the surviving records of The Grand Junction Water Works Company under the general reference of ACC 2558/GJ. This report was made to the Court and is in the supporting papers of the Court.
- James P. Kirkwood. A Report on the Filtration of River Water for the Supply of Cities as Practised in Europe', St Louis, 1869.
- Letter in LMA ACC 2558/GJ/08.
- J. Kenyon Blackwell, Report to Sir George Grey, Secretary of State for the Home Department on the Disaster at the New Hartley Pit, National Archives (NA) H045/7349.
- J Atkinson, Inspector of Mines for County Durham, Statement to the Inquest, February 1863.
- S. P. Timoshenko, History of Strength of Materials, New York, 1953, p. 123.
- Typewritten copies of the handwritten correspondence between Marshall and Bramwell are in the archive at Kew Bridge Steam Museum (KBSM). It is believed that the originals are in the Northumberland County Archives, currently closed for reorganisation.
- Hand-written comment on the copy of the Illustrated London News, 3 February 1862, held in the Hartley pit file at the NA.
- H. W. Dickinson, A Short History of the Steam Engine, p. 146.
- J. Kenyon Blackwell. Op. cit. (5).
- LMA, Minutes of the Court of the Grand Junction Water Company, 18th July 1883.
- D. B. Barton, The Cornish Beam Engine, Truro, 1969, p. 247.
- The Engineer, 23 September 1898 and 3 February 1899 give details of the design of the beam in American paddle steamers.
- D. B. Barton, Op. cit. (13) p. 243.