The series consists of legal instruments signed between UNESCO and non-governmental organizations, universities, foundations, private companies, or individuals. The series includes state universities and academies, but not research institutes with reporting relations to branches of government. United Nations University (UNU), University for Peace (UPEACE) and World Maritime University (WMU) agreements are filed under series A as they were established by the UN system. All UNESCO Chair agreements are filed in this series, but UNITWIN agreements may be found in series A or B. The Archives staff also used this series at first to register special documents or objects of intrinsic value, such as medals, emblems, speeches, recordings, and stamps. The series further contains subseries of agreements for the safeguarding campaigns. Agreements are arranged in order of the reference code given upon registration in the Archives and are, therefore, roughly in chronological order.