Gary Mack | KERA News

Gary Mack

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Dallas has lost its leading expert on the Kennedy assassination. The longtime curator of the Sixth Floor Museum, Gary Mack, died Wednesday at the age of 68. Friends say he suffered from an aggressive cancer.

David Woo / The Dallas Morning News file photo

Gary Mack, the longtime curator of the Sixth Floor Museum and an expert on the President Kennedy assassination, died this morning. He was 68.