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unknown - Public Domain
Not stated - Public Domain
Roferbia - CC BY-SA 3.0
Risa Staszewski - CC BY-SA 2.0
original uploader - Public Domain
Harris & Ewing - Public Domain
Joyce Ellsworth - CC BY 3.0
Bohonek - CC BY-SA 4.0
George Charles Beresford - Public Domain
not stated - Public Domain
U.S. Government Printing Office - Public Domain
Rowanwindwhistler - CC BY-SA 3.0
Civil War glass negative collection (Library of Congress). - Public Domain
Unattributed - Public Domain
BrokenSphere - CC BY-SA 3.0
Anonymous - Public Domain
Public Domain
Burton Williams (†1936) - Public Domain
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Guthrie, Woody, 1912-1967
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Flórez, Enrique, 1702-1773
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Leeb, Wilhelm, Ritter von, 1876-1956
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Melba, Nellie
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Peck, Charles H. (Charles Horton), 1833-1917
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unknown - Public Domain
Wilbur, Crane, 1886-1973
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Not stated - Public Domain
Mahony, Francis, 1804-1866
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Jewett, Frank B. (Frank Baldwin), 1879-1949
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Roferbia - CC BY-SA 3.0
Allison, Dorothy.
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Risa Staszewski - CC BY-SA 2.0
Seale, Bobby, 1936-
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original uploader - Public Domain
López Muñoz, Antonio, 1849-1929
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Harris & Ewing - Public Domain
Williams, John Skelton, 1865-1926
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Moreau, É́mile 1868-1950
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Joyce Ellsworth - CC BY 3.0
Sedlon, Richard, 1900-1992
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Bohonek - CC BY-SA 4.0
Grigorenko, P. G. (Petr Grigorʹevich), 1907-1987
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George Charles Beresford - Public Domain
Conrad, Joseph, 1857-1924
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not stated - Public Domain
Lang, Louis, 1814-1893
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U.S. Government Printing Office - Public Domain
Forand, Aimé Joseph, 1895-1972
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Rowanwindwhistler - CC BY-SA 3.0
Liang, Qichao, 1873-1929
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Civil War glass negative collection (Library of Congress). - Public Domain
Tyler, Daniel, 1799-1882
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Unattributed - Public Domain
Taffanel, Claude Paul, 1844-1908
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Ufer, Walter, 1876-1936
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BrokenSphere - CC BY-SA 3.0
Lockwood, Gary, 1937-....
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Anonymous - Public Domain
Spotted Elk, Molly, 1903-1977
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original uploader - Public Domain
Daniels, Winthrop More, 1867-1944
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Public Domain
McFadden, Daniel
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Burton Williams (†1936) - Public Domain
Kazee, Buell, 1900-1976
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Leclerc, Félix
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Ostrčil, Otakar, 1879-1935
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Ocampo, Silvina