Columbia subject headings:
Dwarfs (Folklore)
Dwarfs (Folklore) in literature.
Gnomes.
Harvard subject headings:
Dwarfs (Persons)
Dwarfs (Persons) in literature.
Dwarfs--Folklore.
Gnomes
Princeton subject headings:
Dwarfs (Folklore)
Dwarfs in literature.
Dwarfs.
Gnomes.