Image from Wikimedia Commons
Jpzeller8 - Public Domain
not stated - Public Domain
Vetter, Ivonne - CC BY-SA 2.0
Mathew Brady - Public Domain
unknown - Public Domain
Steve Jurvetson - CC BY 2.0
publisher: w - Public Domain
misibacsi -
Public Domain
Joseph Stella - Public Domain
Schlesinger Library, RIAS, Harvard University -
Contemporary photograph - Public Domain
:de:Hei ber -
No conegut - Public Domain
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Calleja del Rey, Félix María, conde de Calderón, 1755?-1828
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Paulsen, Friedrich, 1846-1908
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Ponzi, Charles
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Jpzeller8 - Public Domain
Harding, Albert Austin, 1880-1958
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not stated - Public Domain
Fernald, Merritt Lyndon, 1873-1950
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Falkiner, C. Litton (Caesar Litton), 1863-1908
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Vetter, Ivonne - CC BY-SA 2.0
Davidson, Kenneth R.
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Sulzer, William, 1863-1941
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Mathew Brady - Public Domain
Morse, Samuel Finley Breese, 1791-1872
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Egg, Augustus Léopold 1816-1863
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Currie, Arthur, Sir, 1875-1933
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Tierney, Lawrence, 1919-2002
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Flynn, Errol, 1909-1959
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unknown - Public Domain
Pumpelly, Raphael, 1837-1923
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Futrelle, Jacques, 1875-1912
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Steve Jurvetson - CC BY 2.0
Vadasz, Leslie L.
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Pitcairn, David, 1749-1809
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Parratt, Walter
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publisher: w - Public Domain
Culver, Helen C., 1832-1925
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misibacsi -
Kondor, Béla, 1931-1972
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Pearson, Frederick Stark, 1861-1915
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Public Domain
Antill, John
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Joseph Stella - Public Domain
Stella, Joseph, 1877-1946
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Aristophanes
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Calonne, Charles-Alexandre de, 1734-1802
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Schlesinger Library, RIAS, Harvard University -
Horner, Matina
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Contemporary photograph - Public Domain
Akerson, George E. (George Edward), 1888-1937
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:de:Hei ber -
Willis, Ike
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No conegut - Public Domain
Kelland, Philip, 1808-1879
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unknown - Public Domain
De Cosmos, Amor, 1825-1897