Series consists of records relating to Marice Strong's liaison and involvement with the United Nations (UN) and its various affiliate organizations. Strong had previously served in a number of roles in the UN and during his time at the World Bank Group (WBG) he served as a liaison between the UN and the WBG.

Records in this series relate to the UN generally but also to specific affiliates, including the United Nations Environment Programme (UNEP), the United Nations Children's Fund (UNICEF), and the United Nations Development Programme (UNDP). Records relating to the United Nations Conference on Environment and Development (UNCED) are also included. Records also relate to Strong's advisory role in UN reform efforts; records reflecting this role begin in 1996, prior to Strong formally assuming the role of senior adviser to United Nations Secretary-General Kofi Annan on the United Nation's reform process in January 1997.

Records consist of correspondence (primarily letters and faxes) relating to information sharing and planning Strong's participation in various meetings and events. In lesser amount are records relating to coordination of President Wolfensohn's engagement with the UN.