Columbia subject headings:
Legends--Germany--Congresses.
Legends--History and criticism--Congresses.
Pied Piper of Hamelin (Tale)--Congresses.
Harvard subject headings:
Legends--Germany--Congresses.
Legends--History and criticism--Congresses.
Pied Piper of Hamelin (Tale)--Congresses.
Pied Piper, of Hamelin (Legendary character)--Congresses.
Princeton subject headings:
Hameln (Germany)--History--Congresses.
Pied Piper of Hamelin (Legendary character)--Congresses.