Page:
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- Locks, Seymour
- American (Chicago, Illinois, 1919 - 1994, Sonoma, California)
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- Lockwood, Ward
- American (Atchison, Kansas, 1894 - 1963, Ranchos de Taos, New Mexico)
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- Loewy, Maurice
- French, born Austria (Vienna, Austria, 1833 - 1907, Paris, France)
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- Loewy, Maurice and Pierre Puiseux
- French (Active 1890s-1900s)
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- Loewy, Raymond
- American, born France (Paris, France, 1893 - 1986, Monte Carlo, Monaco)
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- Loftus, Ed
- British (London, England, 1973)
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- Lohner, Henning
- German (Bremen, Germany, 1961)
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- Lombardi, Mark
- American (Syracuse, New York, 1951 - 2000, New York City, New York)
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- Long, Laurie
- American (1960)
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- Long, Richard
- British (Bristol, England, 1945)
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- Loom
- (Berkeley, California, Established 1991)
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- López Luz, Pablo
- Mexican (Mexico City, Mexico, 1979)
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- López, Nacho
- Mexican (Tampico, Mexico, 1923 - 1986, Mexico City, Mexico)
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- Loran, Erle
- American (Minneapolis, Minnesota, 1905 - 1999, Berkeley, California)
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- LOT-EK
- (New York City, New York, Established 1993)
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- Louie, Harry
- American (San Francisco, California, 1947)
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- Louie, Reagan
- American (San Francisco, California, 1951)
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- Louis, Morris
- American (Baltimore, Maryland, 1912 - 1962, Washington, D.C.)
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- Louyle, Thomas W.
- American (active 1930s)
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- Lovet-Lorski, Boris
- American, born Lithuania (1894 - 1973, New York City, New York)
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- Lowe, Whitney
- American (1958)
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- Lubliner, Malcolm
- American (1933)
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- Lucas, Henri
- Dutch
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- Lucero, Michael
- American (Tracy, California, 1953)
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- Luchishkin, Sergei Alekseevich
- Russian (Moscow, Russia, 1902 - 1985)
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- Lucier, Mary
- American (Bucyrus, Ohio, 1944)
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- Luks, George
- American (Williamsport, Pennsylvania, 1867 - 1933, New York City, New York)
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- Lumière, Auguste
- French (Besançon, France, 1862 - 1954, Lyon, France)
