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When Beau Harper met 108-year-old Joan Fuller at last year’s Remembrance Day service in Mount Hope, Ont., he knew he was witnessing something rare. “She was 107 years old at the time and still living independently,” Harper told the National Post on Thursday. Harper, a teacher in Peterborough and founder of Soldier Search, introduced himself and asked Fuller and her family whether she would consider being interviewed for his organization, which preserves the histories of Canadian veterans. She agreed. When Harper visited her home in November to conduct the interview, he wasn’t sure...