Discussion relating to the PRR, up to 1968. Visit the PRR Technical & Historical Society for more information.
  by dummy
just wondering what type of insulators are common in pennsylvania along the tracks.
  by NYC3001
The one I have from the PRR, is a Hemingray 42 (15E) clear color. This insulator came off the Detroit-to-Toledo mainline, north of Carleton, MI. The other one I have from the Wabash Railroad, is a Hemingray 42, but is green in color.

If you're looking for information on Hemingray Glass Insulators, here is a great Web site that covers the history of this company: