Columbia subject headings:
Constitutional history--Holy Roman Empire.
Holy Roman Empire--History--1517-1648.
Holy Roman Empire--History--1648-1804.
Holy Roman Empire--Kings and rulers--Election.
Protestantism.
Harvard subject headings:
Constitutional history--Holy Roman Empire
Holy Roman Empire--History--1517-1648.
Holy Roman Empire--History--1648-1804.
Holy Roman Empire--Kings and rulers--Election.
Protestantism.
Princeton subject headings:
Constitutional history--Holy Roman Empire.
Holy Roman Empire--History--1517-1648.
Holy Roman Empire--History--1648-1804.
Holy Roman Empire--Kings and rulers--Election.
Protestantism.