Image from Wikimedia Commons
Internet Archive Book Images -
Original painter unknown, digitized by Internet Archive, converted and cropped by me - Public Domain
author - Public Domain
Ludwig Schwab (other date - Public Domain
(Photo booth?)<br> - Public Domain
original = unknown, scan = Tim Ross - Public Domain
Ealdgyth - CC BY-SA 3.0
original uploader - Public Domain
user at project - CC BY 2.5
"Chas. F. Hoeckel" (Denver, CO), publisher. - Public Domain
anonymous - Public Domain
Thomas W. Jefferson - CC BY-SA 3.0
PODZO DI BORGO - CC BY-SA 4.0
Prof. Mario Bunge - CC BY-SA 3.0
unknown - Public Domain
Adaryosef - CC BY-SA 3.0
US Health and Human Services. No specific photo credit is given by the source. - Public Domain
Alesso Baldovinetti - Public Domain
unknown photographer - Public Domain
Image from Wikimedia Commons
Internet Archive Book Images -
Bird, Junius Bouton, 1907-1982
Image from Wikimedia Commons
Rhea, John, 1753-1832
Image from Wikimedia Commons
Original painter unknown, digitized by Internet Archive, converted and cropped by me - Public Domain
Bloomfield, Maurice, 1855-1928
Image from Wikimedia Commons
Le Tellier, Michel, 1603-1685
Image from Wikimedia Commons
author - Public Domain
McCall, George A. (George Archibald), 1802-1868
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Ferguson, Champ, 1821-1865
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Ludwig Schwab (other date - Public Domain
Gütersloh, Albert Paris, 1887-1973
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(Photo booth?)<br> - Public Domain
Quine, W. V. (Willard Van Orman)
Image from Wikimedia Commons
original = unknown, scan = Tim Ross - Public Domain
Madho Rao Scindia, Maharaja of Gwalior, 1876-1925
Image from Wikimedia Commons
Ealdgyth - CC BY-SA 3.0
Woodlock, Henry (ca 1250-1316).
Image from Wikimedia Commons
Foster, F. J. (Francis James), 1872-1948
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original uploader - Public Domain
Carlyle, Alexander, 1722-1805
Image from Wikimedia Commons
Francesco Sforza, Duke of Milan, 1401-1466
Image from Wikimedia Commons
user at project - CC BY 2.5
Adler, Lou, 1933-...
Image from Wikimedia Commons
original uploader - Public Domain
Fish, Hamilton, 1808-1893
Image from Wikimedia Commons
"Chas. F. Hoeckel" (Denver, CO), publisher. - Public Domain
Belford, James B. (James Burns), 1837-1910
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anonymous - Public Domain
Duncan, Norman, 1871-1916
Image from Wikimedia Commons
Gronich, Shlomo
Image from Wikimedia Commons
Thomas W. Jefferson - CC BY-SA 3.0
Beck, Franz Ignaz, 1734-1809
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PODZO DI BORGO - CC BY-SA 4.0
Sim, 1926-2009
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Prof. Mario Bunge - CC BY-SA 3.0
Bunge, Mario, 1919-....
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Trollope, Anthony, 1815-1882
Image from Wikimedia Commons
unknown - Public Domain
Howe, Richard Howe, Earl, 1726-1799
Image from Wikimedia Commons
Adaryosef - CC BY-SA 3.0
Mundy, Josef
Image from Wikimedia Commons
US Health and Human Services. No specific photo credit is given by the source. - Public Domain
Retton, Mary Lou, 1968-
Image from Wikimedia Commons
Alesso Baldovinetti - Public Domain
Baldovinetti, Alesso, 1425-1499
Image from Wikimedia Commons
unknown photographer - Public Domain
Longman, Evelyn Beatrice, 1874-1954
Image from Wikimedia Commons
Simmons, Gustavus J.
Image from Wikimedia Commons
Greenstein, Robert, 1946-
Image from Wikimedia Commons
Crowe, Russell, 1964-....