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Brockhaus-1837: Londonderry
Brockhaus-1911: Londonderry [2] · Londonderry
Herder-1854: Londonderry [3] · Londonderry [1]
Meyers-1905: Londonderry [3] · Londonderry [2] · Londonderry [1]
Pierer-1857: Londonderry [2] · Londonderry [1]