NAPTP Presentation to the National Association of Royalty Owners, October 19, 2007

Company presentations from 2007 MLP Investor Conference, March 7-8, 2007

Merrill Lynch MLP Investor Guide, November 21, 2006

Master Limited Partnership Primer:  Understanding an Emerging Asset Class, Alerian Capital Management LLC, April 1, 2006.

Master Limited Partnerships:  Primer 2nd Edition, Wachovia Capital Markets, LLC, August 23, 2005.

The Raymond James Guide to MLPs, July 15, 2005.