This series consists of bankbooks for accounts with the Bala branch of the North and South Wales Bank Ltd of ab Owen, publisher, Llanuwchllyn, and for the publication of Cymru, Cymru'r Plant, Wales, and Y Llenor.

The file comprises papers which include letters, bills and receipts, a bank book, and a notebook recording details of a sale of household furniture at Bryn'r Aber, Llanuwchllyn, on 28 October 1914.