File comprises various papers on policies (including the Welsh language, international issues, trades unions, unemployment), tactics, historical background, other campaigning groups in Wales including Cymdeithas yr Iaith Gymraeg (The Welsh Language Society), the National Union of Unemployed Workers and Cefn, documents related to socialist organisations in other countries including Pobblaght Soshiallagh Vannin (Isle of Man), and Marxist thinking on the national question.