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McNamara - CC BY-SA 3.0
Carrie Jones - CC BY-SA 3.0
anonymous -
US gov - Public Domain
unknown - Public Domain
EVula - CC BY-SA 4.0
Photograph - Public Domain
author - Public Domain
George Grantham Bain - Public Domain
Public Domain
National Media Museum -
United States Army Signal Corps - Public Domain
user at project - CC BY 3.0
US Government Printing Office - Public Domain
Francis Cotes (1726-1770) - Public Domain
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McNamara - CC BY-SA 3.0
Skrowaczewski, Stanisław, 1923-
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Tart, Quong, 1850-1903
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Carrie Jones - CC BY-SA 3.0
Jones, Carrie.
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Goodwin, L. G. (Leonard George)
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anonymous -
Foster, Norman, 1900-1976
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US gov - Public Domain
Kerr, Robert S. (Robert Samuel), 1896-1963
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unknown - Public Domain
Abellio, Raymond, 1907-1986
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EVula - CC BY-SA 4.0
Shores, Del
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Fifer, Joseph Wilson, 1840-1938
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Goebel, William, 1856-1900
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Photograph - Public Domain
Richard, François 1819-1908
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author - Public Domain
Grimes, Bryan, 1828-1880
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Borch, Gerard ter 1617-1681
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George Grantham Bain - Public Domain
Ellsworth, Lincoln, 1880-1951
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Vaillant-Couturier, Paul, 1892-1937
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Burghclere, Herbert Gardner, Baron, 1846-1921
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Crookshank, Harry, 1893-1961
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Barefield, Eddie, 1909-1991
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Rabin, Yitzhak, 1922-1995
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Public Domain
Woodburn, William, 1838-1915
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Bustamante, Carlos María de, 1774-1848
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Public Domain
Rigdon, William McKinley, 1904-
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National Media Museum -
Abney, William de Wiveleslie, Sir, 1843-1920
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Cabrera, Luis, 1876-1954
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Barker, George F. (George Frederick), 1835-1910
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Chandler, J. A. C. (Julian Alvin Carroll), 1872-1934
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United States Army Signal Corps - Public Domain
Herren, Thomas W. (Thomas Wade), 1895-1985
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user at project - CC BY 3.0
Tice, George A.
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US Government Printing Office - Public Domain
Gray, Kenneth J. (Kenneth James), 1924-
Image from Wikimedia Commons
Francis Cotes (1726-1770) - Public Domain
Ilchester, Stephen Fox-Strangways, Earl of, 1704-1776