
First Day Cover, Usa, Jan 15 1957
First Day Cover, Usa, Jan 15 1957: a stamp honoring those who helped fight polio

First Day Cover, Usa, Jan 11 1957
First Day Cover, Usa, Jan 11 1957: Depicting Alexander Hamilton bicentennial

First Day Cover, Usa, Aug 15 1957
First Day Cover, Usa, Aug 15 1957: Comemmorating Shipbuilding between 1607 and 1957

First Day Cover, Usa, Dec 27 1957
First Day Cover, Usa, Dec 27 1957: Celebrating Religious Freedom in America

First Day Cover, Usa, Nov 22 1957
First Day Cover, Usa, Nov 22 1957: Wildlife conservation, depicting whooping cranes

First Day Cover, Usa, Jan 15 1955
First Day Cover, Usa, Jan 15 1955: Commemorating the 150th Anniversary of the Pennsylvania Academy of the Fine Arts

First Day Cover, Usa, Jan 17 1956
First Day Cover, Usa, Jan 17 1956: Commemorating the 250th anniversary of Benjamin Franklin

First Day Cover, Usa, Feb 12 1955
First Day Cover, Usa, Feb 12 1955: Commemorating Michigan State college and Pennsylvania State University, the first of the Land-Grant Colleges.

First Day Cover, Usa, 1957
First Day Cover, Usa, 1957: Depicting Ramon Magsaysay, President of the Philippines

First Day Cover, Usa, Nov 9 1956
First Day Cover, Usa, Nov 9 1956: Wildlife conservation, depicting king salmon. Four of the same stamps

First Day Cover, Usa, Sep 14 1953
First Day Cover, Usa, Sep 14 1953: Depicting Sagamore Hill, Oyster Bay - the home of Theodore Roosevelt

First Day Cover, Usa, Apr 30 1956
First Day Cover, Usa, Apr 30 1956: Commemorating the fifth International Philatelic Exhibition

First Day Cover, Usa, Feb 23 1955
First Day Cover, Usa, Feb 23 1955: Depicting the Rotary International organization.

First Day Cover, Usa, Feb 28 1952
First Day Cover, Usa, Feb 28 1952: Commemorating 125 years of Rail Transportation

First Day Cover, Usa, Apr 30 1953
First Day Cover, Usa, Apr 30 1953: Commemorating the Louisiana Purchase Sesquicentennial

First Day Cover, Usa, Sep 11 1952
First Day Cover, Usa, Sep 11 1952: Celebrating Women in the Armed Forces