Apparently, Roosevelt, or his speechwriters, borrowed it from A New Deal, a book by Stuart Chase that was published in 1932 and adapted the same year into a cover story for the magazine The New Republic.
Al parecer, Roosevelt o los redactores de sus discursos la tomaron de A New Deal (“Un nuevo trato”), libro de Stuart Chase que se publicó en 1932 y se adaptó el mismo año en un tema de portada para la revista The New Republic.