Tim Cook, the chief historian at the Canadian War Museum, has died, the museum announced Sunday evening.
He also served as the museum's director of research and was reponsible for several key contributions, according to the museum.
"Tim Cook was a passionate ambassador both for the museum and for Canadian military history. He has forever left his own mark on history," said Yasmine Mingay, senior director of public affairs, development and outreach at the museum.
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Cook was the author of 19 books on Canada's wartime experience and won multiple awards for his coverage of Canadian military history, particularly the First and Second World Wars.
Cook received the Queen Elizabeth II Diamond Jubilee Medal for his contributions to Canadian historical scholarship.
"Our sincerest condolences go to his family, friends, colleagues, and many admirers. A more formal opportunity to celebrate Tim Cook's contributions will be shared through Museum channels soon," Mingay said.
The Canadian War Museum, located in Ottawa, is the country's national museum of military history.