Letter from George Barlow, Canadian Director of RWDSU to A. E. Hemming, Executive Secretary of the Canadian Labour Congress, 25 Nov., 1971 (George Barlow Papers, National Archives of Canada, MG 28 I 286, Vol. 1, File 1-21); Labour Canada, Directory of Labour Organizations in Canada. Ottawa: Minister of Supply and Services, various years; Thomas Ernest Collins, The Retail, Wholesale and Department Store Union. The Political Behaviour of a Trade Union in Ontario. Unpublished M.A. Thesis, University of Western Ontario, London, Ontario, 1974, pp. 24, 39 40, 70, 136 7, 139; RWDSU Record, 19 (6), June, 1972, p. 20; 23 (1), January, 1976, p. 9; 26 (2), February, 1979, p. 5; 27 (1), January, 1980, p. 7.