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unknown - Public Domain
Unknown photographer (not specified in book) -
G. Benaglia - Public Domain
U.S. Air Force - Public Domain
Slowking4 -
author - Public Domain
unknown (Deutsches Archäologisches Institut) - Public Domain
Gary Thom at https://www.flickr.com/photos/afulki/ - CC BY 2.0
unknown - CC BY-SA 3.0
State of Louisiana. - Public Domain
Carl Van Vechten -
original uploader - Public Domain
Mrlopez2681 - Public Domain
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Brooks, Mary T.
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unknown - Public Domain
Balbo, Cesare, conte, 1789-1853
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Schuffenecker, Claude-Emile, 1851-1934
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Unknown photographer (not specified in book) -
Schiøtz, Hjalmar, 1850-1927
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unknown - Public Domain
Rumpf, Georg Eberhard, 1627-1702
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Maus, Octave, 1856-1919
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G. Benaglia - Public Domain
Firenzuola, Agnolo, 1493-1543
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unknown - Public Domain
Wynne, Sarah Edith, Eos Cymru, 1842-1897
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unknown - Public Domain
Woodhull, Alfred A. (Alfred Alexander), 1837-1921
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Leclerc, Jean, active 1573-1627
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U.S. Air Force - Public Domain
Talbott, Harold E., 1888-1957
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Slowking4 -
Eady, Cornelius, 1954-
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Pétiet, Claude 1749-1806
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Keith, David, 1954-....
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Councill, W. H. (William Hooper), 1848-
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author - Public Domain
Shedd, William G. T. (William Greenough Thayer), 1820-1894
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unknown (Deutsches Archäologisches Institut) - Public Domain
Conze, Alexander, 1831-1914
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unknown - Public Domain
Ibarbourou, Juana de, 1895?-1979
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Nay, E.W. (Ernst Wilhelm), 1902-1968
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Gary Thom at https://www.flickr.com/photos/afulki/ - CC BY 2.0
Hughes, Geraldine, 1970-
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unknown - CC BY-SA 3.0
Teilhard de Chardin, Pierre
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State of Louisiana. - Public Domain
Leche, Richard W. (Richard Webster), 1898-1965
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Carl Van Vechten -
Rahn, Muriel
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original uploader - Public Domain
Langtry, Lillie, 1853-1929
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Mrlopez2681 - Public Domain
Reber, Henri, 1807-1880
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Davis, William G.
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Foreman, Carl
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Giordani, Giuseppe, 1751-1798
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Köner, Thomas, 1965-
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Buckley, William F., Jr., 1925-2008