The Original Bootleg Series from the Manticore Vaults is a four-volume "official bootleg" release by Emerson, Lake & Palmer on Castle Recordshttp://www.sanctuaryrecords.co.uk/index.php?action=showproduct&productid=30553&l1=3&l2=0&l3=0&rt=&lastpage= containing live recordings.http://www.progarchives.com/album.asp?id=2645 Each of the four volumes comprised four shows and contained seven or eight CDs. A two disc set of highlights from the first two volumes was released under the name Best of the Bootlegs in 2002.