These wires were strung along 6-pin telegraph company crossarms which became pretty much standard practice in the early 1890s for such companies through around 1910 when 10-pin crossarm construction became the rule, especially Western Union.

When Western Union performed widespread upgrades from iron wire to hard-drawn copper during the teens (or therabouts) 10-pin crossarms were installed with a lot of the former hardware such as braces, nuts, bolts and insulator pins reinstalled upon new poles which often were cedar. The only re-used insulators that were placed on the newer lines were double-petticoat Western Union Standard insulators such as CD 145's, 152's, etc. Single petticoat insulators such as CD 126's (a former Western Union Standard design) were tossed during such rebuilds, at least around here in New England...along with their rotting poles and old crossarms.

Newly installed insulators (again, at least around here in New England) as needed generally were CD 145 "B" beehives, CD 152 Hemingrays and Brookfields with CD 154s in subsequent years (commencing about 1924).

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