Columbia subject headings:
Harvard subject headings:
Palatinate (Germany)--History--Revolution, 1848-1849.
Political prisoners--Germany--Palatinate--Biography.
Schmidt, Philipp Peter, 1829-1878.
Princeton subject headings:
Palatinate (Germany)--History--Revolution, 1848-1849.
Political prisoners--Germany (West)--Palatinate--Biography.
Schmidt, Philipp Peter, 1829-1878.