Travelstamps: 1904 Louisiana Purchase Issue of US Stamps Scott # 326, mint, og, heavily hinged with paper and hinge remnant. Priced accordingly. See
Robert A. Siegel Auction Galleries, Inc. Sale - 1172 Page 77
Jay Smith & Associates: United States: New Arrivals: Stamps - Page 1
19th Century Unused, United States, Stamps - PicClick UK
326 - 1904 5c William McKinley, dark blue - Mystic Stamp Company
Scotts #326 US stamps
Jay Smith & Associates: United States: New Arrivals: Stamps - Page 1
Buying and Selling U.S. and worldwide postage stamps for stamp collectors.
326 - 1904 5c William McKinley, dark blue
Scotts #326 US stamps
5 Cent Stamp
Jay Smith & Associates: United States: New Arrivals: Stamps - Page 1