Maddenguides - Madden NFL football news and discussion board. - http://maddenguides.com
Official Madden 2004 Site - Official site from EA Sports. Find game information, videos, and downloads. - http://www.easports.com/games/madden2004/home.jsp
Monstrous Madden 2004 Playbook - Offers several custom playbooks with new formations and descriptions of plays. - http://www.monsterden.net/madden2004/