Telegraph Relay by Bunnell - 1880s Design - Coil End
By Abram Burnett; posted April 27, 2021 View Original: Click to zoom, then click to magnify (1800 x 1200) 370KB
This relay was restored and now functions in the operating telegraph exhibit at the Harris Tower interactive museum of the National Railway Historical Society, Harrisburg Chapter, in Harrisburg, Pa.
