If any on this site are getting royalties from Anadarko or a number of other companies Listed on left column this site - http://www.oildex.com/ - Its a excellent place to review your past royalties and individual well production of those your getting paid on. You will also get via email the breakdowns and check amount several days before your check is received.
You log-on number should come with your royalty check, or contact your company if its listed.