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User at project link - Public Domain
GrzegorzPetka - Public Domain
unknown - Public Domain
Anselm Quixal -
Chicago Daily News, Inc. - Public Domain
Daderot - CC0 1.0
Scanned by eBay seller vintageadstudio1. The original ad is from Columbia Artists Management, Inc. - Public Domain
Cornell Alumni Association - Public Domain
Paul Thompson (photographer) - Public Domain
David Easton -
not indicated - Public Domain
Rohitsuratekar - CC BY-SA 4.0
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Fithian, George W. (George Washington), 1854-1921
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User at project link - Public Domain
Castellani, Renato, 1913-1985
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GrzegorzPetka - Public Domain
Różycki, Ludomir, 1884-1953
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King, Zalman
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unknown - Public Domain
Sandman, Charles William, 1921-1985
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Commerson, Philibert, 1727-1773
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unknown - Public Domain
Amrit Kaur, Rajkumari, 1889-1964
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Retes, Gabriel, 1947-....
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Anselm Quixal -
Pradera, María Dolores
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Keeton, Page
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Chicago Daily News, Inc. - Public Domain
Wrigley, Philip K. (Philip Knight), 1894-1977
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Ponomarev, B. N. (Boris Nikolaevich)
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Daderot - CC0 1.0
Messerschmidt, Franz Xaver, 1736?-1783
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McPhillips, A. E. (Albert Edward), 1861-1938
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Biermann, Aenne, 1898-1933
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Daussoigne, Joseph, 1790-1875
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Scanned by eBay seller vintageadstudio1. The original ad is from Columbia Artists Management, Inc. - Public Domain
Franklin, Frederic, 1914-2013
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unknown - Public Domain
Gray, James M. (James Martin), 1851-1935
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Cornell Alumni Association - Public Domain
Schmidt, Nathaniel, 1862-1939
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Oppeln-Bronikowski, Friedrich von 1873-1936
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Paul Thompson (photographer) - Public Domain
Crotti, Jean, 1878-1958
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Holloway, Thomas, 1800-1883
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David Easton -
Easton, David, 1917-....
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not indicated - Public Domain
Bourgelat, Claude, 1712-1779
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Rohitsuratekar - CC BY-SA 4.0
Tata Institute of Fundamental Research. National Centre for Biological Sciences
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unknown - Public Domain
Elliott, John, 1773-1827
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Copley, John, 1875-1950
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Robinson, Edwin Arlington, 1869-1935
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Chevreuse, Charles-Honoré d'Albert, duc de, 1646-1712
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Sawallisch, Wolfgang, 1923-2013