0001338749-06-000043 4 1 20060323 20060327 20060327 POTLATCH CORP 0001338749 6798 820156045 DE 1231 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 DeVleming Robert P 0001304361 4 34 001-32729 06713035 509 835 1500 601 W RIVERSIDE AVE SPOKANE WA 99201 4 1 edgar.xml PRIMARY DOCUMENT