THE CORPORATE LIBRARY

Related Party Transactions and Outside Related Director Information

Potlatch Corporation (PCH)

3/30/2005 and 4/5/2006 Proxy Information

No related party transactions or special relationships reported for this company. Director relationships marked "Outside Related" at this firm will most often be former executives of the company. Additional information regarding these relationships will be added during our regular updates.

4/5/2004 Proxy Information

No related party transactions or special relationships reported for this company. Director relationships marked "Outside Related" at this firm will most often be former executives of the company. Additional information regarding these relationships will be added during our regular updates.

3/26/2003 Proxy Information

Pillsbury Winthrop LLP, where Ms. Rembe is a partner, provides legal services to Potlatch.

Dr. William T. Weyerhaeuser and Mr. Frederick T. Weyerhaeuser are first cousins.