First Day Covers

Wildlife Conservation Series 1956 First Day Cover

50th Anniversary Pure Food and Drugs Act 1906-1956 First Day Cover

Independence Hall, Philadelphia, PA First Day Cover

10c Regular Postage Series of 1954-56 Independence Hall First Day Cover

James Buchanan First Day Cover

Honoring American Labor Labor Day 1956 First Day Cover

Honoring American Labor Block of Stamps First Day Cover

200th Anniversary Nassau Hall First Day Cover

Devil&#039;s Tower National Monument 1906-1956 First Day Cover

Devil&#039;s Tower National Monument 1906-1956 Block of Stamps First Day Cover

Wildlife Conservation Series 1956 First Day Cover

Honoring the Children of All Nations First Day Cover

Honoring the Children of All Nations Block of Stamps First Day Cover

Alexander Hamilton Bicentennial 1757-1957 First Day Cover

The National Foundation for Infantile Paralysis, Twentieth Anniversary First Day Cover

The National Foundation for Infantile Paralysis ~ Twentieth Anniversary First Day Cover

150th Anniversary U.S. Coast and Geodetic Survey 1807-1957 First Day Cover

150th Anniversary U.S. Coast and Geodetic Survey 1807-1957 Block of Stamps First Day Cover

100th Anniversary American Institute of Architects 1857-1957 First Day Cover

100th Anniversary American Institute of Architects, 1857-1957 Block of Stamps First Day Cover

Commemorating Steel&#039;s First Century First Day Cover

Commemorating Steel&#039;s First Century Block of Stamps First Day Cover

Jamestown Festical First Day Cover

Jamestown Festival, International Naval Review First Day Cover