Unused First Day Covers

1957 3c Honoring Those Who Helped Fight Polio Block of 4 Stamps FDC First Day Cover

1981 17c Electric Auto First Day Cover First Day Cover

1981 18c Professional Management FDC First Day Cover

1981 35c Charles R. Drew First Day Cover First Day Cover

1981 17c Rachel Carson First Day Cover First Day Cover

18c 1981 Surrey with the Fringe on Top FDC First Day Cover

1981 18c Housing America 150th Anniv. FDC First Day Cover

1981 18c George Mason Great Americans Series First Day Cover First Day Cover

1977 13c US Flag Booklet Pane First Day Cover First Day Cover

1977 13c Centennial of Recorded Sound FDC First Day Cover

1981 18c American Red Cross 100th Anniversary FDC First Day Cover

1977 13c Pueblo Art First Day Cover First Day Cover

1977 13c Pueblo Art First Day Cover First Day Cover

1950 3c Honoring Railroad Engineers of America FDC First Day Cover

1981 18c America the Beautiful First Day Cover First Day Cover

1981 18c Camellia Flowers First Day Cover First Day Cover

1981 18c Rose USA First Day Cover First Day Cover

1981 18c Lily USA First Day Cover First Day Cover

1981 18c Dahlia First Day Cover First Day Cover

1981 12c Freedom of Conscience Block of Stamps First Day Cover First Day Cover

1981 12c Freedom of Conscience First Day Cover First Day Cover

1981 18c First Class Domestic Rate First Day Cover First Day Cover

1950 3c Honoring Railroad Engineers FDC First Day Cover

1950 3c Railroad Engineers FDC First Day Cover