Collection of US Postal Service Stamps and Covers

Collection of US Postal Service Stamps and Covers Documenting Historical Events from Ameripex 86, World Stamp Expo 89, and the 500th Anniversary of Columbus' Voyage, Total of 92 Pieces, 154 Stamps; the highlights include nine (9) cards of World Stamp Expo four (4) showing the future of mail delivery in space (canceled); two (2) US $2.40 20th anniversary first moon landing stamps; four sets of sixteen stamps each documenting the 500th anniversary of the first voyage of Columbus to the Western Hemisphere, each set of identical stamps printed by a different country (US, Spain, Italy and Portugal), US face value of $16,34. Please see the attached photos for the complete collection. All materials are in excellent condition having been well maintained, many in the original packaging.