Columbia subject headings:
Ballads, English--History and criticism.
Ballads, Scots--History and criticism.
Songs, English--History and criticism.
Songs--Scotland--History and criticism.
Harvard subject headings:
Ballads, English--History and criticism.
Ballads, Scots--History and criticism.
Songs, English--History and criticism
Songs, Scots--History and criticism.
Princeton subject headings:
Ballads, English--History and criticism.
Ballads, Scots--History and criticism.
Folk songs, English--History and criticism.
Folk songs, Scots--History and criticism.