Vintage Reader's Digest First day of issue stamp collection

Vintage Reader's Digest First Day of Issue stamps on envelopes. Total set of 26 various items are in this collection. All are covered in plastic.The two Europa items have paper markings on the back of the plastic.See photo for example.Items overall are in good condition considering the age of the items.Sold As-Is.If you have any questions regarding these items, please ask before purchasing.Thank you. 1. Set of 4 American Inventors Washington DC 1983 2. Medal of honor Washington DC 1983 3. Veterans World War 1 Milwaukee,WI 1985 4. Aging together Sun City ,AZ 1982 5. Set of 3 American Architecture Teo of them are Washington DC 1982. The other is Chicago,IL 1983 6. Brooklyn bridge Brooklyn ,NY 1983 7. Two Hot air ballooning Washington. DC 1983 8. Set of 3 Knoxville world fair Knoxville,TN 1982 9. Wolf Trap Farm Park for the performing arts Vienna,VA 1982 10. Dr Mary Walker Oswego,NY 1982 11. Joseph Priestley Northumberland,PA 1983 12. Nathaniel Hawthorne Salem,MA 1983 13. Ponce De Leon San Juan,PR 1982 14. America's Libraries Philadelphia,PA 1982 15. The Western Boy Willow Grove ,PA 1982 16. Ersttag Premier Jour First Day of Issue 17. Europa 81 Folklore Isle of Man Post Ofice Authority Europa May 1981 18. Europa 1981 Folklore Bailwick of Guernsey May 22,1981