The Office of the UN High Commissioner for Refugees (UNHCR) received a number of documents after the IRO was dissolved at the end of 1951. Since it would have taken a great deal of effort for the UNHCR to manage these forms itself, the responsible UNHCR official made arrangements with the ITS director at the time for the tracing service to take over the documents. This letter from April 1952 mentions both the reorganization of the files and the removal of papers that were no longer needed.