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Opening Doors Dr Onesimo Hernandez: Mexican American Pioneer By Jane Guzman As the first Mexican American to graduate from Southwestern Medical School and the first to be admitted to the medical staff of St. Paul's Hospital, Onesimo Hernandez opened doors that led to improved health care for Mexican Americans throughout Dallas. But in a forty-year career embracing political action as well as medicine, he has managed to improve the lives of Mexican Americans in many other ways.
Dallas County Heritage Society.Legacies: A History Journal for Dallas and North Central Texas, Volume 5, Number 1, Spring, 1993,
periodical,
1993;
(https://texashistory.unt.edu/ark:/67531/metapth35114/m1/40/:
accessed February 3, 2023),
University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu;
crediting Dallas Historical Society.
