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azqoutes - Public Domain
Editors: Christie Williams and LeeAnn Roberts - Public Domain
Phil Guest - CC BY-SA 2.0
Daniel Steele Durrie (1819-1892) - Public Domain
US Army - Public Domain
US gov - Public Domain
Towpilot -
unknown photographer - Public Domain
National Photo Company - Public Domain
Public Domain
Jonathan S Knowles - CC BY-SA 4.0
Alan Light - CC BY 2.0
unknown - Public Domain
US Government Printing Office (Washington, DC), publisher. - Public Domain
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Medici, Piero de' 1416-1469
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Perkins, Thomas J.
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Loomis, Charles Battell, 1861-1911
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azqoutes - Public Domain
Hawtrey, R. G. (Ralph George), 1879-1975
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Editors: Christie Williams and LeeAnn Roberts - Public Domain
Packer, Boyd K.
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Le Plongeon, Alice D. (Alice Dixon), 1851-1910
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Phil Guest - CC BY-SA 2.0
Francis, Clare
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Kinnaird, Arthur, 1814-1887
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Pio, Louis, 1841-1894
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Daniel Steele Durrie (1819-1892) - Public Domain
Catlin, John, 1803-1874
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US Army - Public Domain
Bagley, James Warren, 1881-1947
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US gov - Public Domain
Geiger, Roy S. (Roy Stanley), 1885-1947
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Mosler, Henry, 1841-1920
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Sivori, Camillo, 1815-1894
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Towpilot -
Pakula, Alan J., 1928-1998
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Evans, Gareth J., 1944-....
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Gracián y Morales, Baltasar, 1601-1658
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Knudsen, Eric A. (Eric Alfred), 1872-1957
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Venier, Sebastiano, approximately 1496-1578
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unknown photographer - Public Domain
Maharero, Samuel, approximately 1854-1923
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Teeple, John Edgar, 1874-1931
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Geisel, Ernesto
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National Photo Company - Public Domain
Ackerman, Ernest Robinson, 1863-1931
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Soloveichik, Ḥayyim, 1853-1918
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Public Domain
Jardine, William, 1784-1843
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Jonathan S Knowles - CC BY-SA 4.0
Explorers Club
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Bell, Jacobus, -1859
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Alan Light - CC BY 2.0
Thomas, Betty, 1948-
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unknown - Public Domain
Pokrovskiĭ, M. N. (Mikhail Nikolaevich), 1868-1932
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US Government Printing Office (Washington, DC), publisher. - Public Domain
Marcantonio, Vito, 1902-1954