The series consists of letters, memoranda, and messages between the DGO and the heads of evaluation units of bilateral and international organizations. The series documents primarily the formulation, implementation, and impact of evaluations within these bilateral and international organizations. Some of the correspondence is with the Special Advisor and Assistant to the DGO and the Director, Operations Evaluation Department (OEDDR). The series also contains copies of studies, publications, and reports of audits and evaluations sent to DGO. A copy of a February 15, 1980 memorandum from President Robert S. McNamara to DGO Mervyn L. Weiner addresses Bank support for upgrading national audit institutions. With this memorandum is correspondence describing implementation actions taken by the Bank and cooperation with the International Organization of Supreme Audit Institutions (INTOSA).