Columbia subject headings:
Harvard subject headings:
London (England)--Tours.
Memorials--England--London--Guidebooks.
Walking--England--London--Guidebooks
Women--England--London--Biography--Dictionaries.
Women--Monuments--England--London--Guidebooks.
Princeton subject headings:
Guidebooks.
London (England)--Buildings, structures, etc.--Guidebooks.
London (England)--Tours.
Memorials--England--London--Guidebooks.
Walking--England--London--Guidebooks.
Women--England--Biography--Dictionaries.
Women--England--London--Monuments--Guidebooks.