National Association of Retail Collection Attorneys (NARCA) - www.narca.org
ACA International - www.acainternational.org
American Bar Association - http://www.americanbar.org/aba.html
Oklahoma Bar Association - http://www.okbar.org/
Oklahoma County Bar Association - http://www.okcbar.org
AACA American Alliance of Creditors Attorneys - https://pier.aacanet.org/aacanet/
The National List of Attorneys - http://nationallist.com