Columbia subject headings:
Heroes--Mythology--Congresses.
Quests (Expeditions) in literature--Congresses.
Travel in literature--Congresses.
Harvard subject headings:
Heroes--Mythology--Congresses.
Quests (Expeditions) in literature--Congresses.
Travel in literature--Congresses.
Princeton subject headings:
Heroes--Mythology--Congresses.
Quests (Expeditions) in literature--Congresses.
Travel in literature--Congresses.