Image from Wikimedia Commons
borsi112 - CC BY-SA 3.0
Unidentified (Ensian published by University of Michigan). - Public Domain
unknown - Public Domain
Hpschaefer - CC BY 3.0
Joseph Gaston, George H. Himes - Public Domain
Not recorded - Public Domain
Norran Lamberson. - Public Domain
V. Hardy - Public Domain
Public Domain
Hans Meyer - Public Domain
Greg Spiers - CC BY-SA 3.0
Gyula Stetka - Public Domain
no conegut - CC BY-SA 4.0
Bain - Public Domain
Brianmcmillen - CC BY-SA 4.0
Image from Wikimedia Commons
borsi112 - CC BY-SA 3.0
Roberts, Monty, 1935-....
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Unidentified (Ensian published by University of Michigan). - Public Domain
Lane, Mark, 1927-....
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Linden, Hal
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unknown - Public Domain
Stoney, G. Johnstone (George Johnstone), 1826-1911
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Hpschaefer - CC BY 3.0
Roberts, Hank
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Joseph Gaston, George H. Himes - Public Domain
Crooks, Ramsay, 1787-1859
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Not recorded - Public Domain
Mortara, Edgardo, 1851-1940
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Norran Lamberson. - Public Domain
Monroe, Charlie
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Stanton, Harry Dean, 1926-....
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unknown - Public Domain
Hope, John, 1868-1936
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V. Hardy - Public Domain
Basin, Thomas, 1412-1491
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Tull, Jethro, 1674-1741
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Ufer, Walter, 1876-1936
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Public Domain
Fisher, Zachary, 1910-
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Hans Meyer - Public Domain
Schulze, Johannes, 1786-1869
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Public Domain
Rowse, Samuel Worcester, 1822-1901
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Hoerle, Heinrich, 1895-1936
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Greg Spiers - CC BY-SA 3.0
Ruttman, Larry
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Sontag, Henriette
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Jadwin, Edgar, 1865-1931
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Leonardo, da Vinci, 1452-1519
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Groby, Thomas Grey, Baron of, 1623?-1657
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Pons, Antoine, 1725-1792
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unknown - Public Domain
Beynon, William, 1888-1958
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unknown - Public Domain
Kaufmann, David, 1852-1899
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unknown - Public Domain
Allen, J. K. (John Kirby), 1810-1838
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Gyula Stetka - Public Domain
Bandholtz, Harry Hill, 1864-1925
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no conegut - CC BY-SA 4.0
Hazlett, Olive C. (Olive Clio), 1890-
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Bain - Public Domain
Macbride, Thomas H. (Thomas Huston), 1848-1934
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Brianmcmillen - CC BY-SA 4.0
Davis, Richard, 1930-....