Letter from [Percy Fitzpatrick] Rowell, Secretary, The Institution of Electrical Engineers, Savoy Place, Victoria Embankment, London, W. C. 2., to [Alan Archibald] Campbell Swinton, F. R. S., 40 Chester Square, S. W. 1. Further to his previous letter confirms that it is clear that in referring to Mr Cameron Mawson, Sir Charles Parsons meant to refer to Mr Gibson, quoting an excerpt from the letter in question. 15 February 1929