Letters and papers from the library of Ellis William Jones of Plasteg, Bala, largely relating to agricultural co-operation in Wales, and with particular reference to the Welsh Agricultural Organisation Society Limited, Stapleton-Cotton House Limited, etc. Among them are addresses and notes; a notebok containing the names and postal addresses of officers and committee members of agricultural co-operative societies in Wales; letters from J. Nugent Harris, secretary to the Agricultural Society, 1909, Charles O. Hughes, Menai Bridge, 1925, George Florance Irby, 6th baron Boston, 1925, and R. Parry, Bangor, secretary to the Stapleton-Cotton House Ltd, 1925, with some typescript and draft replies; typescript copies of testimonials to E. W. Jones from Lord Boston, Major-General A. E. Sandbach, C.B., D.S.O., Bwlchycibau, Colonel the Hon. R. Stapleton-Cotton [of Llanfair Pwllgwyngyll, etc.], R. J. Lloyd Price, Rhiwlas, Bala, 1911, D. D. Williams, University College of Wales, Aberystwyth, 1911, and J. E. Jones, vicar of Rhosygwaliau, Bala, 1911; and cyclostyled copies of addresses delivered at the Liberal Speakers' School at Oxford and at the Liberal Summer School at Cambridge, 1925.

Records of the Society from its formation in 1904 until 1955, comprising minutes of council and committee meetings and secretary's reports