Image from Wikimedia Commons
Desconocido; finales del siglo XIX - Public Domain
Fotokannan - CC BY-SA 3.0
unknown - Public Domain
Mzony - CC BY-SA 3.0
:w:en:Herbert Lambert - Public Domain
Public Domain
Fyodor Bronnikov - Public Domain
Nv8200p - CC BY-SA 3.0
Western Publishing and Engraving Co. (New York, NY), publisher. - Public Domain
Daniel Barsotti -
No illustrator named in original source. - Public Domain
US gov - Public Domain
United States Steel Corporation, the show's sponsor. - Public Domain
Image from Wikimedia Commons
Desconocido; finales del siglo XIX - Public Domain
Renan, Ary, 1857-1900
Image from Wikimedia Commons
Fotokannan - CC BY-SA 3.0
Rele, Kanak
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unknown - Public Domain
Kairamo, Alfred Oswald, 1858-1938
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Van Amringe, J. Howard (John Howard), 1835-1915
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Scott, James Brown, 1866-1943
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Mzony - CC BY-SA 3.0
Stevens, Thomas, 1938-
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Skeat, Walter W. (Walter William), 1835-1912
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:w:en:Herbert Lambert - Public Domain
Holst, Gustav
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Barbour, James, 1775-1842
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Public Domain
Hogan, Thomas F., 1938-
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unknown - Public Domain
Gardner, Archibald, 1815-1902
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Fyodor Bronnikov - Public Domain
Zucchi, Virginia, 1849-1930
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Nv8200p - CC BY-SA 3.0
Giardina, Anthony.
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López de Ayala, Adelardo, 1828-1879
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Cassuto, Umberto, 1883-1951
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Butterworth, Hezekiah, 1839-1905
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Western Publishing and Engraving Co. (New York, NY), publisher. - Public Domain
Wheeler, Frank Willis, 1853-1921
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Lemare, Edwin Henry.
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Daniel Barsotti -
Joyce, Tom, 1956-
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Adams, Eva Bertrand, 1908-1991
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No illustrator named in original source. - Public Domain
Philp, Elizabeth, 1825-1885
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US gov - Public Domain
Young, S. B. M. (Samuel Baldwin Marks), 1840-1924
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Bell, Jacobus, -1859
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Clark, Ralph, -1794
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Urquijo, Mariano Luis de, 1768-1817
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United States Steel Corporation, the show's sponsor. - Public Domain
Vanderbilt, Gloria, 1924-....
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Sheffield, John Holroyd, earl of, 1735-1821
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Walsh, James J. (James Joseph), 1865-1942
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Vollard, Ambroise, 1867-1939
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Fries, Jakob Friedrich, 1773-1843