Grand Central Station relay room, c. 1961.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...n_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...ay_station.jpg
Previously:
https://www.homemadetools.net/forum/...175#post157699
https://www.homemadetools.net/forum/...811#post167495
https://www.homemadetools.net/forum/...296#post126879
https://www.homemadetools.net/forum/...607#post132631
https://www.homemadetools.net/forum/...912#post156575
