This post shows the front of a CD 135.5 E.R.W. which was found in the spring of 1981 on a two cross-arm pole near Starucca Station, Pennsylvania (Wayne Co.). This telegraph line was defunct and was along the D&H railway (Delaware & Hudson). Information on the insulator is as follows:

CD-135.5 E.R.W. - MLOD - Ice Blue Aqua (With Bubbles, Micro Bubbles, and a Small Amber Milk Streak) Measurements Are 105 mm High x 85 mm Wide. The color appears to be lighter than the aqua color most often seen for this insulator.

The D&H Railway and telegraph line was built by the Erie Railway in 1869 and was fully opened in 1872. The Erie Railway had full trackage rights over the whole system that they built for the D&H Railroad. I will also post an 1886 map of the Delaware and Hudson "canal" railway main line. The spur line where this E.R.W. was found appears to connect Honesdale, PA on the mainline D&H railway line in the South with Lanesboro, PA which is on the D&H mainline in the North. Much of the anthracite coal is found in this area. At Honesdale, PA, the D&H gravity railroad went southeast to the Pennsylvania Coal Company railroad at Hawley, PA.