Press releases are not considered UN Documents. Their use is considered only informational. However press releases are important research tools because they are produced in advance of the UN Documents.
United Nations News is the best place to find UN press releases. Press releases have their own documentation symbol system. The United Nations Documentation: Research Guide provides more information on researching press releases.
Press releases before October 13, 1995 are difficult to find. In rare cases, older press releases may be found on the websites of various organizations. Use Internet search engines to look for them. Alternatively, news articles or journal articles may provide citations for web site addresses or paper reproductions.