Columbia subject headings:
Hägerström, Axel, 1868-1939--Archives--Catalogs.
Hägerström, Axel, 1868-1939--Manuscripts--Catalogs.
Uppsala universitetsbibliotek--Catalogs.
Harvard subject headings:
Princeton subject headings:
Hägerström, Axel, 1868-1939--Archives--Catalogs.
Hägerström, Axel, 1868-1939--Manuscripts--Catalogs.
Uppsala universitetsbibliotek--Catalogs.