Columbia subject headings:
Diaries--Authorship--Congresses.
Diaries--History and criticism--Congresses.
Harvard subject headings:
Diaries--20th century--History and criticism--Congresses.
Diaries--Authorship--Congresses.
Mühsam, Erich, 1878-1934.
Princeton subject headings:
Diaries--20th century--History and criticism--Congresses.
Diaries--Authorship--Congresses.