East Bridge interlocking electrical plan. The Illinois Central Gulf initials on the bottom left are a nice ode history and to the date of the interlocking.
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A reminder that above all, safety is the most important.
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The train display above the interlocking cabinet. Normally these boards are painted and not made of paper.
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The 36 lever electro-interlocking machine. I forget the exact manufacturing date, but I want to say pre-WWII. 1938 comes to mind. Manual levers activated a relay which would throw a switch. Levers also activated signals.
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Interior of Harrison St. interlocking Tower during an authorized visit in 2018. . More details here: industrialscenery.blogspot.com/2016/03/harrison-street-to...
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