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Alfons Karny - Public Domain
Public Domain
unknown - Public Domain
gnuish (Gnuish - CC BY-SA 3.0
United States Congress - Public Domain
Congressional Pictorial Directory - Public Domain
Gilbert Stuart - Public Domain
Edward Wilton Carpenter, Charles Frederick Morehouse - Public Domain
unknown -
White Studio, New York. - Public Domain
British Council Qatar - CC BY-SA 4.0
NIH or an employee thereof acting in an official capacity (reporting for the ''NIH Record''). - Public Domain
Walker Galleriies (after) - Public Domain
Brady-Handy Photograph Collection (Library of Congress) - Public Domain
Selbymay - CC BY-SA 3.0
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Faribault, G.-B. (Georges-Barthélémi), 1789-1866
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Alfons Karny - Public Domain
Parandowski, Jan, 1895-1978
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Public Domain
Middleton, Charles, 1874-1949
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unknown - Public Domain
Carter, Thomas Henry, 1854-1911
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gnuish (Gnuish - CC BY-SA 3.0
Smothers, Tom, 1937-
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United States Congress - Public Domain
Denton, Winfield K. (Winfield Kirkpatrick), 1896-1971
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Gilpin, Charles S. (Charles Sidney), 1878-1930
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Adam, Brother, 1898-
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Grow, Galusha A. (Galusha Aaron), 1823-1907
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Gibson, Edmund, 1669-1748
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Cramer, John, Sir, 1896-
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Congressional Pictorial Directory - Public Domain
Chapman, Jim, 1945-
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Gilbert Stuart - Public Domain
Calvert, Rosalie Stier, -1821
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Edward Wilton Carpenter, Charles Frederick Morehouse - Public Domain
Dickinson, Edward, 1803-1874
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Tobin, Genevieve, 1901-1995
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unknown -
Gottschalk, Louis Reichenthal, 1899-1975
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White Studio, New York. - Public Domain
Flexner, Anne Crawford, 1874-1955
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Baloghy, George (New Zealand painter, born 1950)
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British Council Qatar - CC BY-SA 4.0
Doyle, Patrick, 1953-...
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Martín y Soler, Vicente, 1754-1806
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Dietrich, Veit, 1506-1549
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NIH or an employee thereof acting in an official capacity (reporting for the ''NIH Record''). - Public Domain
Armstrong, Lance
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Klug, A. (Aaron), Sir, 1926-
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Torres, Fina
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Walker Galleriies (after) - Public Domain
Lucas, Samuel, 1805-1870
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Brady-Handy Photograph Collection (Library of Congress) - Public Domain
Luttrell, John King, 1831-1893
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Lowery, Robert, 1916-1971
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Selbymay - CC BY-SA 3.0
Cailliaud, Frédéric, 1787-1869
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Browning, Tod, 1880-1962
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Simonneau, Charles, 1645-1728