(1904 Louisiana Purchase Exposition) The Cascades. Lovely multicolor illustrated design on 1904 cover franked with 2¢ Louisiana Purchase tied by St. Louis Exposition Sta. machine cancel (Bomar STL04-05B), cover with "Hesse Envelope Co., #63" imprint; opening slit at top of cover, Very Fine and attractive; with 2009 P.F. certificate. Estimate  $150 - 200. $0 (Image)