The first US president to win the Nobel Peace Prize was of course Theodore Roosevelt, in 1906 for his mediation of the Treaty of Portsmouth. Browsing through YouTube I found that several recordings of his speeches survive. His accent, to me, sounds completely unlike any I have heard in New York - his family of course being New York aristocracy:
But his younger cousin Franklin Roosevelt's accent sounds entirely recognisably northeastern to me:
What then surprised me even more was to hear the voice of Eleanor Roosevelt - wife of Franklin and niece of Theodore:
Queen Elizabeth II would be proud of some of those vowels! For extra amusement, here's Eleanor Roosevelt on What's My Line?