Railroad Communications Pole and Openwire Circuits Detail Data Sheet.
By Joe Maurath, Jr.; posted November 21, 2022 View Original: Click to zoom, then click to magnify (648 x 603) 91KB
Author and date of issue not known. Image probably dates back to the 1940s or 1950s. Note that wood crossarm braces are suggested opposed to employing galvanized metal ones.
