United States Stamps Featuring the "Nelson" Collection & The Dr. Larry C. Parks Collection of United States Postal Stationery

1904 Louisiana Purchase Exposition, "P.O. Dep't Ex." Machine cancel, souvenir card prepared for the "Post Office Department Exhibit, U.S. Government Building, Louisiana Purchase Exposition, St. Louis, Mo.", July 2, 1904 International machine cancel applied as usual, light bends, Very Fine and rare, Bomar records less than 30 examples (Bomar STL04-07, $200)Sale 3053: The Dr. Larry C. Parks Collection of United States Postal Stationery