Columbia subject headings:
Harvard subject headings:
English language--Middle English, 1100-1500--Congresses.
English language--Old English, ca. 450-1100--Congresses.
English literature--Middle English, 1100-1500--History and criticism--Congresses.
English literature--Old English, ca. 450-1100--History and criticism--Congresses.
Princeton subject headings:
English language--Middle English, 1100-1500--Congresses.
English language--Old English, ca. 450-1100--Congresses.
English literature--Middle English, 1100-1500--History and criticism--Congresses.
English literature--Old English, ca. 450-1100--History and criticism--Congresses.