Columbia subject headings:
Charlemagne, Emperor, 742-814--Influence.
Charlemagne, Emperor, 742-814--Travel--Palestine--In literature.
Crusades.
Harvard subject headings:
Charlemagne, Emperor, 742-814--Influence.
Charlemagne, Emperor, 742-814--Travel--Palestine--In literature.
Charlemagne,--Influence.
Crusades
Princeton subject headings:
Charlemagne, Emperor, 742-814--Legends.
Charlemagne, Emperor, 742-814--Travel--Palestine.
Pilgrims and pilgrimages--Palestine.