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U.P.R.R. Glass Threadless Telegraph
CD735 Mulford & Biddle, c. 1867.
An artifact from Transcontinental Railroad and telegraph history. The CD735 Mulford & Biddle / U.P.R.R. glass threadless telegraph insulator was put in use sometime around 1867. Telegraph line was constructed along the U.P.R.R. right of way as it expanded west to meet the Central Pacific R.R. at Promontory in 1869. Many of the insulators with the Mulford & Biddle U.P.R.R. mark were used from Wyoming to Utah. This example is a nice shade of blue aqua although in reduced light it appears to lean a bit to the green side. This insulator has not been cleaned or tumbled and has an extremely light, sheen consistent with it's age and area of use. Relatively thin glass. On the Biddle side is an area 1 1/2" affected by a couple old chips. Present also are the typical tiny base flakes. Lack of stress lines, bubbles, cracks and wire groove chips.
Description and Photographs Courtesy of "Teleglassera".