For six decades, she has been the silent woman linked to one of the most notorious crimes in the nation’s history, the lynching of Emmett Till, a 14-year-old black boy, keeping her thoughts and memories to herself as millions of strangers idealized or vilified her.

But all these years later, a historian says that the woman has broken her silence, and acknowledged that the most incendiary parts of the story she and others told about Emmett — claims that seem tame today but were more than enough to get a black person killed in Jim Crow-era Mississippi — were false.

The woman, Carolyn Bryant Donham, spoke to Timothy B. Tyson, a Duke University professor — possibly the only interview she has given to a historian or journalist since shortly after the episode — who has written a book, “The Blood of Emmett Till,” to be published next week.

In it, he wrote that she said of her long-ago allegations that Emmett grabbed her and was menacing and sexually crude toward her, “that part is not true.”