Performance Rights Organizations (PRO's)
ASCAP - http://www.ascap.com
BMI - http://www.bmi.com
SESAC - http://www.sesac.com
Music Publishing
CCLI (Christian Copyright Licensing International) - http://www.ccli.com
Association of Independent Music Publishers - http://www.aimp.org
International Confederation of Music Publishers - http://www.icmp-ciem.org
Music Publishers Association - http://www.mpa.org
Church Music Publishers Association - https://cmpamusic.org
Music Licensing
The Harry Fox Agency - http://www.harryfox.com
CMRRA (Canadian Musical Reproduction Rights Agency) - http://www.cmrra.ca
US Government
U.S. Copyright Office - http://www.lcweb.loc.gov/copyright
US Patent and Trademark Office - http://www.uspto.gov
Copyright Royalty Board - http://www.loc.gov/crb
Federal Legislative Information - http://thomas.loc.gov
The Office of the US Trade Representative - http://www.ustr.gov
Strategy Targeting Organized Piracy (STOP!) - http://www.stopfakes.gov
US House of Representatives - http://www.house.gov
US Senate - http://www.senate.gov
International
International Confederation of Music Publishers - http://www.icmp-ciem.org
International Intellectual Property Alliance - http://www.IIPA.org
Songwriting
Nashville Songwriters Association International - http://www.nashvillesongwriters.com
Songwriters Guild - http://www.songwritersguild.com
Songwriters’ Hall of Fame - http://www.songhall.org
General Copyright
The Copyright Society - http://www.csusa.org
Copyright Alliance - http://www.copyrightalliance.org
Copyright Society of the South - http://copyrightsocietyofthesouth.com
Industry Resources
Pro Music - http://pro-music.org
The Recording Industry Association of America - http://www.riaa.com