1
Published 2016
...United States :...
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2
Published 2017
...Taos Pueblo, United States :...
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3
Published 2017
...Independence Hall, United States :...
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4
Published 2017
...Mesa Verde, United States :...
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5
Published 2015
...Newborn Screening in the United States /...
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6
Published 2017
...Hawaii, United States :...
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7
Published 2017
...The Statue of Liberty, United States :...
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8
Published 2007
...United States v. Aaron Burr....
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9
Published 2017
...Everglades National Park, United States :...
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10
Published 2017
...Monticello and the University of Virginia, United States /...
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11
Published 2017
...Yellowstone National Park, United States /...
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12
Published 2017
...Yosemite National Park, United States :...
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13
Published 2007
...Nikita Khrushchev Visits the United States ca. 1959 /...
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14
Published 2017
...San Juan de Puerto Rico, United States :...
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15
Published 2013
...United States Army Unit Advisor in Vietnam /...
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16
Published 2017
...Grand Canyon National Park, United States :...
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17
Published 2007
...Cubans Line Up for Visas to the United States ca. 1996 /...
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18
Published 2007
...Congress Debates Solutions to the Drug Problem in the United States ca. 1986....
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19
Published 2007
...United States Sends Warships to Monitor Cuban Rebellion ca. 1933 /...
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20
Published 2007
...The United States Tests the First Atomic Bomb ca. 1945 /...
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