Apollo 11 Footprint on the Moon
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Ulysses S Grant 18th US President
Wellcome Images
U.s Constitution #1
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Hulbert Flag Early US Flag 1776
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Wwii, Winston Churchill, U.k. Prime
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Old Faithful Inn Yellowstone Np 1928
NPS Photo Asahel Curtis
Glacier Point, 1890
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Us Navy Ship With Dazzle Camouflage, Wwi
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Leslie Groves, U.s. Army Officer
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Inverted Jenny, U.s. Postage Stamp, 1918
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Bowermans Waffle Sole Design
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American Civil War, Surrender Of Lee
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Ulysses S. Grant With Abraham Lincoln
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Emancipation Proclamation
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Dwarfs At Service Station
Dick Hanley
United States Constitution #1
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U.s. Navy Mailmen, 1890s
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USS Nautilus Worlds First Atomic Submarine
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Deborah Sampson, American Patriot #1
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Ulysses S. Grant, 18th American #5
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Paul Revere House
David Davis
First Us Aerial Photo, Boston
Metropolitan Museum of Art
Thomas Edison, American Inventor #1
U.S. Department of the Interior
Arthur Ashe, American Tennis Champion
Christopher W. Morrow
James Monroe
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Carl Linnaeus, Swedish Botanist #1
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Ulysses S. Grant, 18th American #1
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Amelia Earhart, American Aviatrix
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Ursa Major Constellation, 1822
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Native American Man In Painted Robe
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U S S Shaw Pearl Harbor December 7 1941
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Washington Crossing The Delaware
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Vitamin Donut
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Atoms For Peace, U.s. Postage Stamp
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Burkburnett, Texas, Oil Field
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Ulysses S. Grant, 18th American
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Ulysses S. Grant, 18th American #2
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Washington And Lafayette At Valley Forge
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Hms Jersey, 1777 #1
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Nurses On Night Rounds 1899
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Andrew Jackson, U.s. Postage Stamp, 1863
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Evolution Of Electronic Digital Computers #1
US Army
War Of 1812, Battle Of Lake Erie, 1813 #3
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U.s. Naval Training Center, San Diego
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Thomas Jefferson, 3rd U.s. President
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John Quincy Adams, 6th U.s. President
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William Howard Taft, 27th U.s. President
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U.s. Patent For Neutronic Reactor, 1955
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Stephanie Kwolek, Us Chemist
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Calvin Coolidge
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Declaration Of Independence
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Carl Linnaeus, Swedish Botanist #3
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Oldest Water Clock Illustration #6
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Before And After Hurricane Camille 1969
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United States Constitution
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Shock Unit, 1970
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Ulysses S. Grant, 18th American #10
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Union Terminal, Cincinnati
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Stagecoach Near Upper Falls
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Roosevelt Arch Yellowstone Np
NPS Photo Frank J Haynes
Elysian Grove Market #1
Richard and Ellen Thane
Boy Puts Letter Into Mailbox, C. 1880
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Free And Slave States Of America, C
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Ranch Mailbox, 1941
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Frederick Douglass, U.s. Postage Stamp
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Sioux Painted Buffalo Hide
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Pueblo Indians
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Exhibit Lbj Presidential Library
Inga Spence
Mission San Juan Capistrano
Richard and Ellen Thane
Mission San Juan Capistrano #6
Richard and Ellen Thane
Grand Coulee Dam Powerhouse
Earl Roberge