Boston, 1898. Closeup of CD 140 Jumbo Insulators on Two Crossarms, Trolley Pole
By Joe Maurath, Jr.; posted August 31, 2020
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The one on the bottom definitely is a CD 140. Those on the top arm for the most part appear smaller. They could be composition or porcelain insulators or some type of glass insulator style we might not know about... |