Used First Day Covers

Pioneer Jupiter Marking United States Unmanned Space Accomplishments First Day Cover

Collective Bargaining, Free Enterprise The American Way First Day Cover

Contributers to the Cause, Sybil Ludington First Day Cover

Unheralded Heroes, American Revolution Bicentennial First Day Cover

Contributers to the Cause, Haym Salomon First Day Cover

Peter Francisco First Day Cover

Contributors To the Cause Peter Francisco First Day Cover

Salem Poor First Day Cover

Contributors To the Cause Salem Poor First Day Cover

Mariner 10--Venus/Mercury Saluting U.S. Unmanned Space Accomplishments First Day Cover

Venus/Mercury Mariner 10 First Day Cover

US Bicentennial First Day Cover

US Bicentennial First Day Cover

US Bicentennial Lexington &amp; Concord 1775 First Day Cover

US Bicentennial First Day Cover

Battles of Lexington &amp; Concord First Day Cover

Battles of Lexington &amp; Concord First Day Cover

Battles of Lexington &amp; Concord First Day Cover

Battles of Lexington &amp; Concord First Day Cover

Battles of Lexington &amp; Concord First Day Cover

Commemorating Battles of Lexington &amp; Concord First Day Cover

Commemorating Battles of Lexington &amp; Concord First Day Cover

American Revolution Bicentennial First Day Cover

Paul Lawrence Dunbar First Day Cover