A calandar of letters and documents relating to Chartist riots in the county of Montgomery in the possession of the Rt. Hon. [George Charles Herbert] 4th earl of Powis, and extracts from an article entitled 'The Montgomeryshire Chartist Riots' by J. E. Samuel, Dowlais, published in Cymru Fu, 31 August, 1889. The calendar was prepared during the time the records were deposited at the National Library of Wales (see 561, below).