Image from Wikimedia Commons
Charles Rogers - CC BY-SA 2.5
ru - Public Domain
Koen Suyk / Anefo - CC BY-SA 3.0
NBC Radio - Public Domain
Robinson, Mary Byers - Public Domain
Julia Margaret Cameron (1815-1879) - Public Domain
Bureau of Industrial Service. This was a division of advertising agency Young & Rubicam and was widely used for distribution of publicity materials in early television. - Public Domain
Pirie MacDonald - Public Domain
*:File:KurtVonSchuschnigg1936.jpg -
No photographer credited in original source. - Public Domain
unknown - Public Domain
Artist unidentified - Public Domain
Allexkoch - CC BY-SA 4.0
Dundak - CC BY-SA 3.0
NOAA - Public Domain
George Henry Harlow - Public Domain
Riadismet - CC BY-SA 3.0
CBS Television - Public Domain
Image from Wikimedia Commons
Lefévre-Gineau, Louis, 1751-1829
Image from Wikimedia Commons
Charles Rogers - CC BY-SA 2.5
Conway, Lynn.
Image from Wikimedia Commons
Costa, Michael, 1808-1884
Image from Wikimedia Commons
ru - Public Domain
Rumi︠a︡nt︠s︡ev-Zadunaĭskiĭ, Petr Aleksandrovich, graf, 1725-1796
Image from Wikimedia Commons
Koen Suyk / Anefo - CC BY-SA 3.0
Piccard, Jacques
Image from Wikimedia Commons
NBC Radio - Public Domain
Allen, Fred, 1894-1956
Image from Wikimedia Commons
Robinson, Mary Byers - Public Domain
Roche, Josephine A. (Josephine Aspinwall), 1886-1976
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Prieto, Indalecio, 1883-1962
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Gibbs, William C. (William Channing), 1789-1871
Image from Wikimedia Commons
Julia Margaret Cameron (1815-1879) - Public Domain
Lecky, William Edward Hartpole, 1838-1903
Image from Wikimedia Commons
Bureau of Industrial Service. This was a division of advertising agency Young & Rubicam and was widely used for distribution of publicity materials in early television. - Public Domain
Bourke-White, Margaret, 1904-1971
Image from Wikimedia Commons
Pirie MacDonald - Public Domain
Finley, John H. (John Huston), 1863-1940
Image from Wikimedia Commons
*:File:KurtVonSchuschnigg1936.jpg -
Schuschnigg, Kurt, 1897-1977
Image from Wikimedia Commons
No photographer credited in original source. - Public Domain
Christie, Winifred, 1882-1965
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unknown - Public Domain
Houwald, Ernst von 1778-1845
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Bossi, Giuseppe
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Smallwell, Edward, 1720 or 1721-1799
Image from Wikimedia Commons
Artist unidentified - Public Domain
Strong, Josiah, 1847-1916
Image from Wikimedia Commons
Allexkoch - CC BY-SA 4.0
Giebel, C. (Christoph), 1820-1881
Image from Wikimedia Commons
Dundak - CC BY-SA 3.0
Banse, Juliane, 1969-
Image from Wikimedia Commons
Hunter, Alberta
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unknown - Public Domain
Harris, C. Alexander (Charles Alexander), Sir, 1855-1947
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Smith, Edward John, 1850-1912
Image from Wikimedia Commons
NOAA - Public Domain
Davidson, George, 1825-1911
Image from Wikimedia Commons
George Henry Harlow - Public Domain
Harlow, George Henry, 1787-1819
Image from Wikimedia Commons
Riadismet - CC BY-SA 3.0
Jenney, W. L. B. (William Le Baron), 1832-1907
Image from Wikimedia Commons
Kaczmarek, Jan A.P.
Image from Wikimedia Commons
Greene, Liz.
Image from Wikimedia Commons
CBS Television - Public Domain
Marchand, Nancy, 1928-2000
Image from Wikimedia Commons
Alexander, Lamar, 1940-