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U.S. Army - Public Domain
Unknown military photographer of the Signal Corps - Public Domain
Public Domain
unknown - Public Domain
Thomas H. Ince Corporation - Public Domain
US Government Printing Office - Public Domain
Stephen Lewellyn - Public Domain
Heinrich Klaffs - CC BY-SA 2.0
user at project - CC BY 3.0
Erling Mandelmann - CC BY-SA 3.0
G. A. Natesan & Co. -
:de:Andreas Maislinger - Public Domain
Kaihsu - CC BY-SA 3.0
Harris & Ewing, Inc. - Public Domain
Barovold - CC BY-SA 3.0
Bibliothèque et Archives nationales - Beaudry, Québec - Public Domain
ServiceAT - CC BY-SA 3.0
Mathew Brady Levin Corot Handy - Public Domain
William Thomas Fry (1789–1843) - Public Domain
Photographer:Maurice Seymour, Chicago. - Public Domain
original uploader - CC BY-SA 2.5
Steve Rhodes - CC BY-SA 2.0
Image from Wikimedia Commons
U.S. Army - Public Domain
McGarr, Lionel C. (Lionel Charles), 1904-
Image from Wikimedia Commons
Unknown military photographer of the Signal Corps - Public Domain
Hussey, George F. (George Frederick), 1894-1983
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Public Domain
Christensen, Carlos Hugo, 1914-1999
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unknown - Public Domain
Reclus, Jean Jacques Paul, 1847-1914
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Thomas H. Ince Corporation - Public Domain
Woodruff, Bert, 1856-1934
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US Government Printing Office - Public Domain
McMillan, John L. (John Lanneau), 1898-1977
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Pons, Antoine, 1725-1792
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Stephen Lewellyn - Public Domain
Mentschikoff, Soia, 1915-....
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Heinrich Klaffs - CC BY-SA 2.0
Finn, Fred E. 1947-2003
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Moseley, James W.
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user at project - CC BY 3.0
Nasr, Seyyed Hossein
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Erling Mandelmann - CC BY-SA 3.0
Des Cars, Guy
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Connor, Roger, 1857-1931
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G. A. Natesan & Co. -
Malabari, Behramji M. (Behramji Merwanji), 1853-1912
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:de:Andreas Maislinger - Public Domain
Winter, Ernst Florian
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Kaihsu - CC BY-SA 3.0
Kelley, Robin D.G.
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Harris & Ewing, Inc. - Public Domain
Hooper, Harry
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Barovold - CC BY-SA 3.0
Innes, C. A. (Charles Alexander), 1874-1959
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Bibliothèque et Archives nationales - Beaudry, Québec - Public Domain
Vézina, Joseph 1849-1924
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ServiceAT - CC BY-SA 3.0
Weinberger, Peter J.
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Sherman, Sidney, 1805-1873
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Mathew Brady Levin Corot Handy - Public Domain
Emory, William H. (William Hemsley), 1811-1887
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Swindall, Charles, 1876-1939
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William Thomas Fry (1789–1843) - Public Domain
Coxe, William, 1747-1828
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Bumstead, Henry Andrews, 1870-1920
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Photographer:Maurice Seymour, Chicago. - Public Domain
Long, Avon
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Pennypacker, Galusha, 1844-1916
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original uploader - CC BY-SA 2.5
Armstrong, Henry Edward, 1848-1937
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Grey, Charles Grey, Earl, 1764-1845
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Steve Rhodes - CC BY-SA 2.0
Churchill, Ward