Used First Day Covers

Honoring the 49-Star American Flag, Independence Day, July 4, 1959 Block of Stamps First Day Cover

100th Anniversary of the First Official Airmail Balloon &quot;Jupiter&quot; 1859-1959 First Day Cover

100th Anniversary of the First Official Airmail Balloon &quot;Jupiter&quot; 1859-1959 Plate Block of Stamps First Day Cover

Commemorating the Admission of Hawaii to Statehood 1959 First Day Cover

Honoring the Soil Conservation Movement in America 1959 First Day Cover

3rd Pan American Games Chicago, Illinois Aug 27-Sept 7 1959 First Day Cover

3rd Pan American Games Block of Stamps First Day Cover

Oil&#039;s First Century, 1859-1959 Block of Stamps First Day Cover

2 1/2c Coil Stamp Liberty Series 1954-1959 First Day Cover

Coil Stamp Liberty Series Block of Stamps First Day Cover

Dental Health First Day Cover

Honoring Ernst Reuter Champion of Liberty First Day Cover

Honoring Ernst Reuter, Champion of Liberty, Mayor of Berlin 1947-1953 Block of Stamps First Day Cover

Honoring Ernst Reuter, Champion of Liberty, Mayor of Berlin 1948-1953 First Day Cover

Honoring Ernst Reuter Champion of Liberty Mayor of Berlin 1948-1953 Block of Stamps First Day Cover

15 Cent Air Mail Stamp First Day Cover

Liberty For All 15¢ Air Mail Stamp Block of Stamps First Day Cover

Honoring Dr. Ephraim McDowell First Day Cover

Honoring Dr. Ephraim McDowell First Day Cover

George Washington First Day Cover

American Credo Series - George Washington First Day Cover

Commemorating the International Winter Sports Games First Day Cover

International Winter Sports Games Block of Stamps First Day Cover

Honoring Thomas G. Masaryk, Founder-First President of Czechoslovakia ~ Champion of Liberty First Day Cover