Finding ephemera on telephone poles is an art. When one scavenges layer upon layer you find that there are an amazing number of staples to dispose of and since weathering happens one has to sift through a great deal of paper to get acceptable ones. Weathering seems to cause mold. It also makes the best ephemera if you are willing to work for it. Carry a hammer or a crowbar and be prepared to clean off moldy papers with rubbing alcohol. I am wondering if it is best to forage for telephone pole ephemera in the summer only! Stay tuned.