This is a popular community along the Massachusetts shoreline.

A lot of (if not most) Cape Cod communities originally were served by the Southern Massachusetts Telephone Company. Very likely some So. Mass. Tel. Co. insulators were within this scene. This company was founded in 1878. Commencing around 1900, New England Telephone began buying their exchanges one-by-one until the So. Mass. Tel. Co. was absorbed by Ma Bell in 1938. Most of the communities SMT Co. served were within southeastern Massachusetts.

Of interest: Massachusetts statute approved around 1907 required electric and telephone companies within the state to identify their circuits. This was accomplished via insulators with their company's names (including City Fire Alarm and Fall River Police Signal marked insulators, used in Fall River, MA). Other pole-line-users stencilled their initials or names onto their crossarms. In addition a pole tag affixed to their crossarm was commonly employed by New England Telephone commencing around 1920. The New England Electric System companies operating in MA also used this method for decades...up until the 1970s. I do not know if this law had a sunset clause or not. However it was for the safety of utility workers upon busy, earlier-day poles who might not have been able to distinguish their lines from others' which often carried lethal voltages.

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