The Unicode Technical Committee (UTC) document register is now freely available for public access. This change has been made to increase public involvement in the ongoing deliberations of the UTC in its work developing and maintaining the Unicode Standard and other related standards and reports. Open access to the document register makes it easier to search both current and historical documents for topics of interest, using widely available search engines. The UTC document register contains online documents dating back to 1997 and online registers for paper document distributions dating back to 1991.
http://www.unicode.org/L2/all-docs.html