NFL.COM -  .

HowStuffWorks: "How NFL Equipment Works" - - How equipment is selected and protects players.

National Football League Players Association (NFLPA) - - Players' union responsible for collective bargaining. Offers FAQ, union history, information for NFL hopefuls, information for current and retired players, and community programs.

NFL Alumni Headquarters - - Official web site of the NFL Alumni. Dues-paying membership association. Anyone who ever played professional football qualifies as a Professional Member. Other individuals may enroll as Associate or Corporate members. The primary criterion for joining the NFL Alumni is a desire to support the charitable goals and activities of the organization.

NFL Canada - - League coverage with a Canadian flavor. Profiles of Canadian players in the NFL, history, local NFL events, and information on the NFL/CFL Alliance.

NFL Coaches Association - - Football news, interviews, chat, and event calendar.

Wikipedia - - Covers the regular season scheduling formula, playoff format, college draft, salary cap, racial policies, television contracts, video games, lore and history, and famous nicknames.