Harold Simmons stands by the Dallas courthouse entrance in October 1997. Simmons, the Texas billionaire, philanthropist and GOP donor, died Saturday in Dallas. He was 82. Flor Cordero /Reuters /Landov hide caption toggle caption Flor Cordero /Reuters /Landov The Two-Way Billionaire Philanthropist, GOP Donor Harold Simmons Dies December 30, 2013 He was a top donor to the Republican Party, but his philanthropy crossed political lines. The Dallas Morning News reports that Simmons died Saturday in Dallas. He was 82.