At the Sign of the Barber's Pole - William Andrews - Bog

In most instances the old signs which indicated the callings of shopkeepers have been swept away. Indeed, the three brass balls of the pawn-broker and the pole of the barber are all that are left of signs of the olden time. Round the barber's pole gather much curious fact and fiction. So many suggestions have been put forth as to its origin and meaning that the student of history is puzzled to give a correct solution.