There are examples that will appeal to social history enthusiasts.
Princetown Postcard Dartmoor Prison Gates Real Photo Equipment request 1952
Princetown Postcard Dartmoor Prison Gate &Bell Real Photo Chapman & Son
Princetown Postcard Dartmoor Prison Gate Entrance & Bell Real Photo EA Sweetman
Princetown Postcard Dartmoor Prison Gate Entrance Bell Real Photo Telegraph Pole
Princetown Postcard Dartmoor Prison Gate Prisoners Convicts going to work Colour
