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James Peale (1749-1831) - Public Domain
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NASA - Public Domain
unknown - Public Domain
Norman Abramson - Public Domain
US Government Printing Office - Public Domain
Uncredited -
Original uploader was GuzonjinSin - CC BY 3.0
Henry Albert Seymour - Public Domain
Ferdinand Hodler - Public Domain
White House photographer - Public Domain
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Haynes, Elwood, 1857-1925
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Müller von Königswinter, Wolfgang, 1816-1873
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James Peale (1749-1831) - Public Domain
Cushing, Thomas H. (Thomas Humphrey), 1755-1822
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user at project - CC BY-SA 3.0
Martin, Charlotte
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NASA - Public Domain
Ross, Jerry Lynn, 1948-
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Drummond, William, 1585-1649
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unknown - Public Domain
Sunia, Fofō I. F. (Fofō Iosefa Fiti), 1937-
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Norman Abramson - Public Domain
Abramson, Norman.
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Yarbrough, Glenn, 1930-
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US Government Printing Office - Public Domain
Jennings, W. Pat (William Pat), 1919-1994
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Emerson, Benjamin Kendall, 1843-1932
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Ballantine, William, 1812-1887
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Koteas, Elias, 1961-....
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Vargas, Pedro
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Whitney, J.D. (Josiah Dwight), 1819-1896
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US Government Printing Office - Public Domain
McCarthy, Richard D. (Richard Dean), 1927-1995
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Baker, C. F. (Charles Fuller), 1872-1927
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Carelli, Gabor
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Garman, Samuel, 1843-1927
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Richmond, George, 1809-1896
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Original uploader was GuzonjinSin - CC BY 3.0
Beecroft, Vanessa
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Cash, William
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Landis, Kenesaw Mountain, 1866-1944
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Weyand, Fred C. (Fred Carlton), 1916-2010
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Henry Albert Seymour - Public Domain
Seymour, Henry
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Championnet, Jean-Étienne, 1762-1800
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Fischer, Eduard
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Ferdinand Hodler - Public Domain
Hodler, Ferdinand, 1853-1918
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Muck, Carl 1859-1940
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White House photographer - Public Domain
Steinbeck, John, 1946-....