9999999997-06-033983 11-K 1 20051231 20060601 20060808 POTLATCH CORP 0001338749 6798 820156045 DE 1231 11-K 34 001-32729 06043854 601 WEST RIVERSIDE AVENUE SUITE 1100 SPOKANE WA 99201 (509) 835-1500 601 WEST RIVERSIDE AVENUE SUITE 1100 SPOKANE WA 99201 Potlatch Holdings, Inc. 20050914 11-K 1 9999999997-06-033983.paper AUTO-GENERATED PAPER DOCUMENT