Glass Insulators in Vancouver

It is still possible to see old glass insulators suspended along aging telegraph poles running next to country railway tracks.  Production of insulators began in the mid 1800's and they were used as a   means of insulating early communication wires.  Today with the advance of technology, fiber optics and satellites, insulators have become obsolete. As with many railway items, glass insulators are now collected with color ones being more desirable.  I was surprised to spot a row of green glass insulators hidden between an office tower and an older brick apartment building right in downtown Vancouver.