Correspondence and other papers regarding the establishment and expansion of National Co-operative Chemists Letter to Mid-Rhondda Co-operative Society from Co-operative Wholesale Society regarding National Co-operative Chemists, with copy of specimen agreement, 16 Feb 1945 Letters between Mid-Rhondda Co-operative Society, Treorchy, Ton and Penygraig Societies, regarding the establishment of National Co-operative Chemists, 24 Jan 1945, 9 Feb 1945, 9 Feb 1945 and 2 Mar 1945 24 Jan 1945-16 Feb 1945