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The Schwadron Collection of the National Library of Israel - Public Domain
Charles Reutlinger Upload, stitch and restoration by Jebulon - Public Domain
Public Domain
Louis Boilly - Public Domain
Mathew Brady (1822-1896) and Levin C. Handy (1855-1932). - Public Domain
Kalamazoo Bats Cabinets - Public Domain
Gind2005 -
Editors: Cathy Tillack and Karen Still - Public Domain
Dmenkart - CC BY-SA 4.0
unknown - Public Domain
Spaarnestad Archive - CC0 1.0
Internet Archive Book Images -
Gérald Garitan - CC BY-SA 4.0
Published by A. Williams, Boston, 1878 - Public Domain
Wikiuserphysik - CC BY-SA 3.0
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The Schwadron Collection of the National Library of Israel - Public Domain
Nussbaum, Arthur, 1877-1964
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Grell, Mike
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Rains, Claude, 1889-1967
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Charles Reutlinger Upload, stitch and restoration by Jebulon - Public Domain
Hébert, Edmond 1812-1890
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Trecartin, Ryan, 1981-
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Public Domain
Kelley, Edgar Stillman, 1857-1944
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Louis Boilly - Public Domain
Boilly, Louis, 1761-1845
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Mathew Brady (1822-1896) and Levin C. Handy (1855-1932). - Public Domain
Steele, William Randolph, 1842-1901
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Kalamazoo Bats Cabinets - Public Domain
Mathews, Robt. T. (Robert Trott), 1851-1900
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Arends, Leslie C. (Leslie Cornelius), 1895-1985
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Gind2005 -
Castries, Charles Eugène Gabriel de La Croix, marquis de, 1727-1800
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Editors: Cathy Tillack and Karen Still - Public Domain
Smith, Joseph Fielding, 1876-1972
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Dmenkart - CC BY-SA 4.0
Ladner, Doris Ann, 1942-
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Armstrong, D.M. (David Malet), 1926-
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unknown - Public Domain
Hafen, John, 1856-1910
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Leydig, Franz, 1821-1908
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Levy, Jules, 1838-1903
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Spaarnestad Archive - CC0 1.0
Ventura, Ray, 1908-1979
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Degetau y González, Federico, 1862-1914
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unknown - Public Domain
Nygren, Anders, 1890-1978
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Wu, Peifu, 1874-1939
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Robertson, J. Ross (John Ross), 1841-1918
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Jennings, Humphrey
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Internet Archive Book Images -
Trumbull, H. Clay (Henry Clay), 1830-1903
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Lamming, George, 1927-....
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Gérald Garitan - CC BY-SA 4.0
Descaves, Lucien, 1861-1949
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Preston, Thomas S. (Thomas Scott), 1824-1891
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Published by A. Williams, Boston, 1878 - Public Domain
Abbott, John S. C. (John Stevens Cabot), 1805-1877
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Wikiuserphysik - CC BY-SA 3.0
Mukhanov, V. F.
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Vandenberg, Arthur H. (Arthur Hendrick), 1884-1951