Columbia subject headings:
Harvard subject headings:
Johann Friedrich I, Kurfürst von Sachsen, 1503-1554
Luther, Martin, 1483-1546--Friends and associates.
Reformation--Germany--Biography
Princeton subject headings:
Johann Friedrich I, Kurfürst von Sachsen, 1503-1554.
Luther, Martin, 1483-1546--Friends and associates.
Reformation--Germany--Biography.