Columbia subject headings:
Hesse (Germany)--History--1247-1567.
Hesse (Landgraviate)--History.
Ludwig I, Landgrave of Hesse, 1402-1458.
Harvard subject headings:
Hesse (Germany)--History--1247-1567.
Ludwig I, Landgrave of Hesse, 1402-1458
Princeton subject headings:
Hesse (Germany)--History--1247-1567.
Hesse (Landgraviate)--History.
Ludwig I, Landgrave of Hesse, 1402-1458.