Prices of US Stamps Scott 324: 2c 1904 Louisiana Purchase Exposition
U.S. & Worldwide Stamps & Postal History - June 3-4, 2009
Rare Stamps & Postal History of the World - August 6-7, 2019
Robert A. Siegel Auction Galleries, Inc. Sale - 1105 Page 15
US Stamp Prices Scott Catalog 323 - 1c 1904 Louisiana Purchase
LOUISIANA PURCHASE
1901-Now Used, United States, Stamps - PicClick UK
1904 St Louis Search For Sale - MAVIN
US Stamp Scott # 324.2c Louisiana Purchase Thomas Jefferson
Rare Stamps & Postal History of the World - September 17-18, 2019