Columbia subject headings:
Harvard subject headings:
British Library--History.
British Museum--History.
British Museum--Libraries--History.
National libraries--England--London--History--18th century.
National libraries--England--London--History--19th century.
National libraries--England--London--History--20th century.
Princeton subject headings:
British Museum--Libraries--History.
National libraries--England--London--History--18th century.
National libraries--England--London--History--19th century.
National libraries--England--London--History--20th century.