Series is composed of documentation pertaining to numerous English-speaking Black community organizations based in Montreal. It also contains materials documenting Leon Llewellyn's participation in many of these community organizations. While the series contains materials dated from 1970 to 2012, including textual records, photographs, drawings, and objects, most document the period between 1970 and 1979. Materials primarily concern the activities of these organizations, including their administration, functions, and programs. Community organizations that appear throughout the documentation include, among others, the Negro Community Centre/Charles H. Este Cultural Centre; Black Studies Centre; Quebec Board of Black Educators; Black Community Central Administration of Quebec; Black Community Council of Quebec; National Black Coalition of Canada; Côte-des-Neiges Black Community Association; Notre-Dame-de-Grâce Black Community Association; Côte-des-Neiges Black Community Development Project; Black Theater Workshop; Association of Black Artists; Montreal Black Photography Society; Union United Church; Black Action Party; National Black Coalition Institute of Research in the Black Experience; National Congress of Black Women; Black Community Communications Media; Black Is!; Negro Theater Arts Club; Revue Theater; Black Workers Association; Black Youth Radio; and the Black Youth Television Workshop. Materials related to the Concordia Student Union; Concordia University's Black Student Union; McGill Black Student Union, Caribbean Students' Society of McGill University; and the Black Students' Association of Champlain College are also found in this series.
Documents in this series also concern particular events occurring in the Montreal Black community, including the Second National Congress of Black Women; Afro-Festival; Carnival; Carifiesta; and Congress of Commonwealth Caribbean Immigrants, among many others. In addition, arts-related events, instruction, exhibitions, and programs are well documented throughout, including those which took place at the Black Studies Centre.