Image from Wikimedia Commons
Unknown - Public Domain
Michiel Hendryckx - CC BY-SA 4.0
State of Washington - Public Domain
Esselte - Public Domain
unknown - Public Domain
The Gillimas Service, New York (probably a publicity outlet for Lucky Strike, the radio show's sponsor) - Public Domain
Photographer: Bi Scott<br> - CC BY-SA 4.0
Slowking4 -
New Yorl Public Library -
Napoléonempereur - CC BY-SA 4.0
PLCjr - CC BY-SA 2.0
unknown photographer - Public Domain
Vdevanthery - CC BY-SA 3.0
Public Domain
Michael Fiegle - Public Domain
Someone in the U.S. Army. - Public Domain
Image from Wikimedia Commons
Unknown - Public Domain
Greene, Albert G. (Albert Gorton), 1802-1868
Image from Wikimedia Commons
Mackinnon, William Henry, Sir, 1852-1929
Image from Wikimedia Commons
Michiel Hendryckx - CC BY-SA 4.0
Goethals, Lucien
Image from Wikimedia Commons
State of Washington - Public Domain
Gibbs, George, 1815-1873
Image from Wikimedia Commons
Esselte - Public Domain
Gasser, Herbert S. (Herbert Spencer), 1888-1963
Image from Wikimedia Commons
unknown - Public Domain
Vogel, Eduard, 1829-1856
Image from Wikimedia Commons
Calcraft, John, 1765-1831
Image from Wikimedia Commons
The Gillimas Service, New York (probably a publicity outlet for Lucky Strike, the radio show's sponsor) - Public Domain
King, Wayne
Image from Wikimedia Commons
Photographer: Bi Scott<br> - CC BY-SA 4.0
Jones, J.A. (Jonathan A.)
Image from Wikimedia Commons
Slowking4 -
Shreve, Susan Richards.
Image from Wikimedia Commons
Edinger, Ludwig, 1855-1918
Image from Wikimedia Commons
unknown - Public Domain
Claudel, Camille, 1864-1943
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Perizonius, Jacobus, 1651-1715
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McArdell, James, approximately 1729-1765
Image from Wikimedia Commons
Perkins, Carl Dewey, 1912-1984
Image from Wikimedia Commons
New Yorl Public Library -
Beadle, Erastus Flavel, 1821-1894
Image from Wikimedia Commons
Cané, Miguel, 1851-1905
Image from Wikimedia Commons
Maclaurin, Colin, 1698-1746
Image from Wikimedia Commons
Napoléonempereur - CC BY-SA 4.0
Bréard, Jean Jacques, 1750-1840
Image from Wikimedia Commons
PLCjr - CC BY-SA 2.0
New York World's Fair (1964-1965 : New York, N.Y.)
Image from Wikimedia Commons
Slowking4 -
Arnold, Elizabeth, 1958-....
Image from Wikimedia Commons
unknown photographer - Public Domain
Stewart, Cal, 1856-1919
Image from Wikimedia Commons
Brown, Henry Kirke, 1814-1886
Image from Wikimedia Commons
Vdevanthery - CC BY-SA 3.0
Amiguet, Jean-François, 1950-....
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Public Domain
Yates, Joseph Christopher, 1768-1837
Image from Wikimedia Commons
unknown - Public Domain
Maus, Marion P. (Marion Perry), 1850-1930
Image from Wikimedia Commons
Michael Fiegle - Public Domain
Berlepsch, Hans Hermann Carl Ludwig, Graf von, 1850-1915
Image from Wikimedia Commons
Someone in the U.S. Army. - Public Domain
Ashford, Bailey K. (Bailey Kelly), 1873-1934
Image from Wikimedia Commons
Vargas, Fred
Image from Wikimedia Commons
Lee, John D. (John Doyle), 1812-1877