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To honor first US space program.
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Postage stamp printed in USA shows El Capitan, Yosemite, California, National Parks Issue, 1934
USA Stamp: shows Portrait of Eleanor Roosevelt, Former First Lady of the United States.
A 1948 issued 3 cent United States postage stamp showing California Gold Centennial.
A 2010 United States postage stamp honoring scouting.
1948 Palomara Observatory postage stamp.
A Stamp printed in USA shows the Palomar Mountain Observatory, circa 1948
USA postage stamp showing Mexican Independence of 1810 with an engraved image of a bell ringing
Stamp issued to commemorate the discovery of gold in California in 1848 and the rush of adventurers to California soon after 1849 (referred to as Argonauts in the stamp). The find attracted world-wide attention. Those who came in 1849 were called the forty-niners.Another California stamp:
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A 1971 issued 9 cent United States Airmail postage stamp showing silhouette of Delta Wing.
Telegraph Service from 1844 to 1944 is  Commemorated on Vintage US Postage Stamp. Telegraph poles and wires are illustrated on a rural background.
Agriculture scene and future farmer postal stamp issued in 1953.
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Postage stamp printed in USA shows View of Corregidor, Philippines Issue, Final resistance of the US and Philippine defenders on Corregidor, 1944
Sacramento, California, USA - March 20, 2011: A 1998 USA postage stamp with an illustration of Franklin Delano  Roosevelt (1882-1945) speaking into radio microphones. Often referred to as FDR, his series of radio addresses during the Great Depression became known as "fireside chats". Stamp design by Paul Calle.
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This stamp was issued to honor the 100th anniversary of Fort Bliss in El Paso, Texas. It is probably the best US commemorative stamp for a challenging \
This violet 3-cent postage stamp was issued in 1935. It marked the completion of Boulder Dam (now Hoover Dam) on the Colorado River, between Nevada and Arizona. The vertical design picturing the dam emphasizes the magnitude of its construction.
A highly respected military man who became President.
1958 postage stamp commemorating the 1958 Brussels exhibition.
Puerto Rico's First Gubernatorial Elections in 1949 Commemorated on Vintage US Postage Stamp. A Puerto Rican Man Holds a Gear in One Hand and a Ballot Box in the Other Hand.
Postage stamp printed in the USA shows Eagle Holding Shield, Olive Branch and Arrows in 1937
A 1970 issued 8 cent United States postage stamp showing President Dwight D. Eisenhower.
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United States postage stamp 1963 in the value of 8c used for overseas air mail deliveries showing  a jet flying over the Capitol building
Sandwich, Massachusetts, USA-May 5, 2013:  Born on February 11, 1847,   Thomas A. Edison changed the world   with his inventions. This stamp was issued to commemorate the 100th anniversary of his birth.
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