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Public Domain
Brady-Handy Photograph Collection (Library of Congress) - Public Domain
Charles John Robertson (born 1779?) - Public Domain
Chemical Institute of America - Public Domain
Shadowgate - CC BY 2.0
Brice777 - CC BY-SA 3.0
Moshe Pridan - Public Domain
Brook Gramann - CC BY-SA 3.0
Georges Biard - CC BY-SA 3.0
Minnesota Historical Company - Public Domain
Studio White, New York (George Grantham Bain Collection, Library of Congress) - Public Domain
original uploader - CC BY 3.0
unknown - Public Domain
erica - CC BY-SA 2.0
original uploader -
Félix Nadar (Atelier, tirage de démonstration). Upload, stitch and restoration by Jebulon - Public Domain
The Neale Company (Washington, DC), publisher. - Public Domain
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Public Domain
Schweiker, Richard S. (Richard Schultz), 1926-
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Brady-Handy Photograph Collection (Library of Congress) - Public Domain
Blair, Montgomery, 1813-1883
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Welch, Raquel
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Charles John Robertson (born 1779?) - Public Domain
Beale, William
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Chemical Institute of America - Public Domain
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940
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Shadowgate - CC BY 2.0
Allen, Russell
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Marchand, Jean-Baptiste, 1863-1934
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Brice777 - CC BY-SA 3.0
Guariglia, Justin, 1974-....
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Muñoz de Guzmán, Luís, approximately 1735-1808
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Moshe Pridan - Public Domain
Partos, Oedoen, 1907-1977
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Brook Gramann - CC BY-SA 3.0
Hanabusa, Colleen, 1951-
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Cranworth, Robert Monsey Rolfe, Baron, 1790-1868
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Zhuge, Liang, 181-234
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Georges Biard - CC BY-SA 3.0
Despentes, Virginie, 1969-....
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Minnesota Historical Company - Public Domain
Kees, Frederick G. 1852-1927.
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Dubufe, Edouard, 1819-1883
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Public Domain
Olin, William M., 1845-1911
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Pollin, Robert.
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Stanford, Leland, 1824-1893
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Studio White, New York (George Grantham Bain Collection, Library of Congress) - Public Domain
Esmond, H. V. (Henry V.), 1869-1922
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original uploader - CC BY 3.0
Manos, Constantine
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unknown - Public Domain
Gist, States Rights, 1831-1864
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erica - CC BY-SA 2.0
Burns, Steven, 1973-
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Ferriss, Hugh, 1889-1962
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Gull, William Withey, Sir, 1816-1890
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Townsend, Howard, 1823-1867
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unknown - Public Domain
Hook, Mary Rockwell, 1877-1978
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Félix Nadar (Atelier, tirage de démonstration). Upload, stitch and restoration by Jebulon - Public Domain
Wolff, Albert, 1835-1891
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The Neale Company (Washington, DC), publisher. - Public Domain
Pierce, Mr. (Rice Alexander), 1848-1936
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Guttenberg, Steve, 1958-....