Used First Day Covers

Honoring Haym Salomon, Financial Hero, American Revolution First Day Cover

Honoring Haym Salomon - Financial Hero - American Revolution Block of Stamps First Day Cover

Mariner Venus/Mercury - Saluting United States Unmanned Space Accomplishments First Day Cover

Mariner 10 Venus / Mercury Saluting United States Unmanned Space Accomplishments Block of Stamps First Day Cover

The Battles of Lexington &amp; Concord Bicentennial 1775-1975 First Day Cover

The Battles of Lexington and Concord Bicentennial 1775-1975 First Day Cover

Paul Laurence Dunbar, American Poet 1872-1906 First Day Cover

Paul Laurence Dunbar - 1872-1906 - American Poet Block of Stamps First Day Cover

Honoring D.W. Griffith First Day Cover

Honoring D.W. Griffith 1880-1948 Motion Picture Pioneer Block of Stamps First Day Cover

Battle of Bunker Hill Bicentennial 1775-1975 First Day Cover

Uniforms of the Armed Forces - American Revolution Bicentennial Block of Stamps First Day Cover

1975 International Women&#039;s Year First Day Cover

U.S. Postal Service Bicentennial-1775-1975 Block of Stamps First Day Cover

World Peace through Law First Day Cover

World Peace Through Law 1975 Block of Stamps First Day Cover

LIBERTY BELL AMERICANA SERIES Block of Stamps First Day Cover

Liberty Bell Americana Series 13¢ Definitive Booklet Pane 1975 Block of Stamps First Day Cover

Banking &amp; Commerce, American Bankers Association, 1875-1975 Block of Stamps First Day Cover

Christmas 1975 First Day Cover

Christmas 1975 First Day Cover

Season&#039;s Greetings - Christmas 1975 First Day Cover

Season&#039;s Greetings - Christmas 1975 Block of Stamps First Day Cover

Francis Parkman Block of Stamps First Day Cover