Columbia subject headings:
Anthems.
Choruses, Sacred (Mixed voices), Unaccompanied.
Hymns, English.
Shape-note hymnals.
Tune-books.
Harvard subject headings:
Choruses, Sacred (Mixed voices), Unaccompanied.
Hymns, English.
Tune-books.
Princeton subject headings:
Anthems.
Choruses, Sacred (Mixed voices), Unaccompanied.
Hymns, English.
Hymns.
Shape-note hymnals.
Tune-books.