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History Department


The History Department is sponsered By ZCG Utility Scrap and Maintains old signal related books. We purchase old books and have then scanned and converted to PDF Files. This is all offered for free so that future and current collectors can enjoy the original books without paying the costs. Since this is a FREE service please resepect that we take the time to scan these and offer them for free. Please dont remove our logos or claim they are yours. You may buy copies with out our logos. Hope you enjoys these scans!

photo courtesy of Zachary GillihanSafetran Signal Corp.
photo courtesy of Zachary GillihanUnion Switch & Signal Co
Plate B- Signals
photo courtesy of Zachary GillihanGeneral Railway Signal Co.
Centralized Traffic Control, Bulletin 169