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| View Original: | Union Switch and Signal Co. Style CD DC Code Following Relay, Cosmic Explorer, unknown device, and Ballentine Laboratories AC Volt device - Bayernhof Museum - DSC06316.JPG (4901x2461) | |||
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| Keywords: Union Switch and Signal Co. Style CD DC Code Following Relay, Cosmic Explorer, unknown device, and Ballentine Laboratories AC Volt device - Bayernhof Museum - DSC06316.JPG en Exhibit in the Bayernhof Museum 225 St Charles Place O'Hara Township Pittsburgh Pennsylvania USA Photography was permitted in the museum without restriction 2013-05-18 16 04 16 own Daderot cc-zero Miscellany in Bayernhof Museum Uploaded with UploadWizard Union Switch and Signal | ||||
