1898 Trans-Mississippi and International Exposition. Blue illustrated U.S. Government seal design on Dept. of Publicity and Promotion official exposition corner card cover, franked with 1¢ Trans-Miss (small nick from postal machine) tied by "Omaha, Neb., Jun 25, 98" machine postmark, fresh and Very Fine, 1¢ usage within the first week of issue (Jun 17). Estimate  $100 - 150. $0 (Image)

1898 Trans-Mississippi and International Exposition. Blue illustrated Exposition seal design on official exposition corner card cover, franked with 2¢ Bureau tied by "Burlington, Iowa, Aug 11, 98" machine postmark, Very Fine. Estimate  $100 - 150. $0 (Image)

1898 Trans-Mississippi and International Exposition. Seal exposition ad on locally addressed corner card cover, franked with 2¢ Bureau tied by "Omaha, Neb., Nov 13, 98" duplex cds, Very Fine. Estimate  $75 - 100. $0 (Image)