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Hans Georg Pfannmüller - CC BY-SA 3.0
Samuel Bellin Thomas Barber - Public Domain
Totorvdr59 - CC BY-SA 4.0
rmajzels -
E. W. Maunder - Public Domain
Henri Manuel - Public Domain
Terry Ballard - CC BY 2.0
Telrúnya - Public Domain
Mariusz Kubik, Kmarius - CC BY-SA 3.0
Tamara podolchak - CC BY-SA 3.0
Public Domain
George Charles Beresford - Public Domain
unknown - Public Domain
Mathew Brady Levin Corot Handy - Public Domain
unknown -
KRLA Beat Publications-page 10 - Public Domain
Rob C. Croes / Anefo - CC BY-SA 3.0
US Government Printing Office (Washington, DC), publisher. - Public Domain
State of California - Public Domain
Leslie Ward - Public Domain
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Nares, James, 1715-1783
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Melanchthon, Philipp, 1497-1560
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Pilichowski, Leopold, 1869-1933
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Hans Georg Pfannmüller - CC BY-SA 3.0
Gulbransson, Olaf, 1873-1958
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Samuel Bellin Thomas Barber - Public Domain
Latrobe, Christian Ignatius, 1758-1836
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Totorvdr59 - CC BY-SA 4.0
Teste, François-Antoine, 1775-1862
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rmajzels -
Hejinian, Lyn
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Sonfist, Alan
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E. W. Maunder - Public Domain
Christie, William 1845-1922
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Henri Manuel - Public Domain
Trouessart, E.-L. (Edouard-Louis), 1842-1927
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Rapp, Jean, comte, 1772-1821
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Terry Ballard - CC BY 2.0
Isaacs, Susan, 1943-
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Tytler, William, 1711-1792
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Coornhert, D. V. (Dirk Volkertszoon), 1522-1590
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Telrúnya - Public Domain
Austin, Mary, 1868-1934
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Mariusz Kubik, Kmarius - CC BY-SA 3.0
Enzensberger, Hans Magnus
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Tamara podolchak - CC BY-SA 3.0
Podolchak, Igor, 1962-
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Public Domain
Dalton, Tristram, 1738-1817
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George Charles Beresford - Public Domain
Trevelyan, George Macaulay, 1876-1962
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Earnshaw, Thomas, 1749-1829
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unknown - Public Domain
Le Moyne d'Iberville, Pierre, 1661-1706
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unknown - Public Domain
Sclater, Philip Lutley, 1829-1913
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Mathew Brady Levin Corot Handy - Public Domain
Mercur, Ulysses, 1818-1887
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Venn, Henry, 1796-1873
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unknown -
Launis, Armas, 1884-1959
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KRLA Beat Publications-page 10 - Public Domain
Melcher, Terry
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Rob C. Croes / Anefo - CC BY-SA 3.0
Koryagin, Anatoly Ivanovich, 1938-
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US Government Printing Office (Washington, DC), publisher. - Public Domain
Harmon, Randall S., 1903-1982
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State of California - Public Domain
Merriam, Frank Finley, 1865-1955
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Leslie Ward - Public Domain
Lucy, Henry W. (Henry William), Sir, 1845-1924