Columbia subject headings:
London (England)--Guidebooks.
Marx, Karl, 1818-1883--Homes and haunts--England--London.
Marx, Karl, 1818-1883--Museums.
Harvard subject headings:
London (England)--Guidebooks.
Marx, Karl, 1818-1883--Homes and haunts--England--London.
Marx, Karl, 1818-1883--Museums, relics, etc.
Princeton subject headings:
London (England)--Description and travel.
Marx, Karl, 1818-1883--Homes and haunts--England.