This article reports on research carried out on 189 child welfare files from the largest welfare authority in Northern Ireland from 1950 to 1968. The literature review provides a commentary on some of the major debates surrounding child welfare and protection social work from the perspective of its historical development. The report of the research that follows offers an insight into this important period of child welfare history in Northern Ireland between the two Children and Young Persons Acts (1950 and 1968). Using a method of discourse analysis influenced by Michel Foucault, a detailed description of the nature of practice is offered. This article is offered as a work in progress, focusing specifically on the case file analysis. Further work is planned for dissemination of more detailed analysis and discussion of the broader context within which the practice operated. The research seeks to raise questions based on problems identified in the present with our current understandings of child welfare and protection histories. While recognising the limitations of this study and the need for contextualisation surrounding child welfare practice at the moment, it is argued that some salient conclusions can be drawn about continuity and discontinuity in practice that are of interest to practitioners and students of child welfare social work and can raise questions for further research. (Contains 6 tables.)