near Black River Falls, WI - the line originally used large multiparts but later got refitted with wood crossarms and rubber chickens. Another collector and I hiked a short stretch of line and found fragments of the original multis - likely originally used Lockes with later Ohio Brass multis; communication circuit insulators appear to be U-6xx Lockes. Elton shows one [id=217504143;structure] on this line that was refitted with posts (I have seen some on this line that were on 45-degree supports). Looking at Google Maps, it seems not many towers have survived.