Although a reference code H.IV.31 exists in the original IICI inventory created by UNESCO, the file with this code was marked as missing. The records (letters, documents and a publication) described here appear to have been removed from other original files sometime before 1999. An archivist in 1999 then arranged them under the existing reference code H.IV.31, filing them chronologically and creating a new finding aid. Researchers may consult index cards to determine how these records were originally filed by the Institute.