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Primary media Name Nationality Sorted AscendingDate
Media FileStanislaus Arthuro Oswieczynski1915 - 1968
Media FileAlejandro ObregónColombian1920 - 1992
Media FileJules OlitskiAmerican1922 - 2007
Media FileGeorge Earl OrtmanAmerican1926 - 2015
Media FileUche OkekeNigerian1933 - 2016
Media FileDennis OppenheimAmerican1938 - 2011