Letters and papers relating to the Palleg Railway between the Phoenix Tinplate Company Ltd's Gilwen works at Lower Cwmtwrch in the south and Craig-llwyd and Waun-llwyd in the north, and the Gurnos Wharf, p. Ystradgynlais. The correspondence mainly arises as a result of uncertainty as to the land intended to be let in 1861 to the Swansea Vale Railway Company for their Palleg branch, constructed in 1862, and the land occupied by the Midland Railway Company as successors to the Swansea Vale Railway Company.