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Ralph Emerson Twitchell - Public Domain
Chris Darling - CC BY 2.0
Mathew Brady - Public Domain
anonymous - Public Domain
Martial34 - CC BY-SA 3.0
Perkele - Public Domain
Pete Wright - CC BY 2.0
Towpilot -
Étienne Bocourt after Charles Reutlinger - Public Domain
Al Ravenna - Public Domain
Photoplay magazine - Public Domain
United States Air Force - Public Domain
Chuck369 - CC BY-SA 3.0
Public Domain
Eden Upton Eddis - Public Domain
unknown - Public Domain
Briscoe, Jonathan - Public Domain
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Morse, David A. (David Abner), 1907-
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Du Pont, Alfred Victor, 1798-1856
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Dunning, John, Baron Ashburton, 1731-1783
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Selwyn, Edgar, 1875-1944
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Ralph Emerson Twitchell - Public Domain
Connelly, Henry, 1800-1866
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Chris Darling - CC BY 2.0
Erelli, Mark
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Mathew Brady - Public Domain
Banning, Henry Blackstone, 1836-1881
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Dahm, Helen, 1878-1968
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anonymous - Public Domain
Pueyrredón, Juan Martín de
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Martial34 - CC BY-SA 3.0
Gringore, Pierre, approximately 1475-1538?
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Perkele - Public Domain
Bonatti, Guido, active 13th century
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Andrew, James O. (James Osgood), 1794-1871
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Harrison, Elizabeth, 1849-1927
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Pete Wright - CC BY 2.0
Caplan, Arthur L.
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Farmer, Richard, 1735-1797
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Towpilot -
Pakula, Alan J., 1928-1998
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Høegh-Guldberg, Ove, 1731-1808
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Baudissin, Wolf, Graf, 1789-1878
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Étienne Bocourt after Charles Reutlinger - Public Domain
Patin, M. (Henri), 1793-1876
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Al Ravenna - Public Domain
Apgar, Virginia, 1909-1974
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Allori, Cristofano, 1577-1621
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Photoplay magazine - Public Domain
Vaughn, Alberta
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United States Air Force - Public Domain
Eielson, Carl Benjamin, 1897-1929
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Chuck369 - CC BY-SA 3.0
O'Neill, Dick, 1928-1998
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Public Domain
Parker, Michael, 1949-....
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Eden Upton Eddis - Public Domain
Bunbury, Charles James Fox, Sir, 1809-1886
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unknown - Public Domain
Crane, Stephen, 1871-1900
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unknown - Public Domain
Eger, Akiva ben Moses Guens, 1761-1837
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Russell, Benjamin, 1761-1845
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Briscoe, Jonathan - Public Domain
Ritchie, Adele, 1874-1930