This work is an Ordnance Survey map over 50 years old, which is covered by Crown Copyright which in this case expires 50 years after publication. Ordnance Survey does however ask that they be credited and that the date of publication be given.
Any ancillary rights gained through the creation of the electronic version are granted as freely usable under any circumstances.
=={{int:filedesc}}== {{Information |description={{de|1=Karte des brittischen Landesvermessungsamts der Isle of Portland im Maßstab 1: 63360 bzw. einem Zoll zu einer Englischen Meile.}}{{en|1=Ordnance Survey map of the Isle of Portland, at a scale of 1:63,360 or one inch to one statute mile.}}{{fr|1=Carte du l'office d'arpentage britannique de l'île de Portland à l'échelle 1: 63360 ou d'un pouce à un mille anglais.}} |date=1960-12-31 |source={{Derived from|Ordnance Survey One-Inch Sheet 178 Do...