How small in fact were the differences between and within the Irish communities overseas, and between their cultures and work achievements and those of their host societies? The past decade has seen the arrival of fairly complete bibliographies of the Irish diaspora in the United States and in Britain, and substantial bibliographical essays on the Irish in Canada and in Australia. The pioneer volume of Hartigan and Hickman, compiled outside the academic grid and its resources, is welcome, intelligent and full of small surprises, despite some odd omissions (e.g. all but one of Denis Gwynn’s relevant titles). Yet, unlike Patrick Blessing, they could not rely on and collate existent bibliographies, as he could do with those of J. T. Ellis and Robert Trisco on American Catholic history (1982), Daniel Casey and Robert Rhodes on Irish-American fiction (1979), and W. C. Miller (1975) and Séamus Metress (1981) on the bibliography of Irish-America overall.