Boston, 1898. Closer View of Open Arc Street Lamp and CD 140 on Trolley Pole.
By Joe Maurath, Jr.; posted September 10, 2020 View Original: Click to zoom, then click to magnify (844 x 594) 140KB
Following is another look and better yet, even more closer up :-)... Click "Next".
Note the two "signal" style insulators mounted on the arc light fixture for its connections.
