Columbia subject headings:
Harvard subject headings:
English literature--Early modern, 1500-1700--History and criticism--Congresses
English literature--Middle English, 1100-1500--History and criticism--Congresses.
Secrecy in literature--Congresses.
Princeton subject headings:
English literature--Early modern, 1500-1700--History and criticism.
English literature--Middle English, 1100-1500--History and criticism.
Secrecy in literature.