Columbia subject headings:
Harvard subject headings:
China--History--Warlord period, 1916-1928--Sources.
Tianjin Shi li shi bo wu guan--Catalogs.
Xu, Shichang, 1855-1939--Archives.
Xu, Shichang, 1855-1939--Manuscripts--Facsimiles.
Princeton subject headings:
Catalogs.
China--History--Warlord period, 1916-1928--Sources.
Facsimiles.
Tianjin Shi li shi bo wu guan--Catalogs.
Xu, Shichang, 1858-1939--Archives.
Xu, Shichang, 1858-1939--Manuscripts--Facsimiles.