On January 11th I spent the day in the Sheffield City Archives looking at a treasure-trove of correspondence by the renowned organ expert Reginald Whitworth, who died in 1953. I have long enjoyed his books and articles on the organ – not least his splendidly clear drawings of organ mechanism – and was amazed to find several fat volumes of letters written to him by a vast range of organ-builders and organists from c.1918 up to his death. A return visit to the archives will be necessary, as I could work through only half the material in a day, but here are two letters which may be found of interest.