The Boston Globe also mentions "a series of investigative reports" by the Miami Herald in the winter of 2019 and a September 2019 New Yorker article which seems to be this one:
Does this mean that the Miami Herald and the New Yorker investigated and published this story before the Boston Globe or any media source in the Boston area or all of Massachusetts did?
If so, then I wouldn't call that a scoop. I'd call it extreme reluctance by local media to investigate powerful and/or highly reputable, local institutions and organizations and make them accountable. This dynamic probably happens everywhere; it has obviously been happening in California for at least a century.
That it's this type of story which the Massachusetts media delayed investigating or never planned to investigate explains why the Boston Globe and other local media sources have been vicious toward Senator Warren. It's my impression that the media all over the country really doesn't want a woman to be the President; at least, the majority of the most powerful people in the media don't.