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Folder BSP Categories by later Division Number (by Doc #)

9-digit all numeric codes, used beginning in the early 1960s.

Categories

Folder 000 - 019 Indexes, General Information (by Doc #)
Folder 020 - 199 Apparatus, Tools, Gauges, Test Eq, Power
Folder 200 - 289 Divisions - Switching Systems
Folder 300 - 379 Divisions - Transmission Sys & Testing
Folder 400 - 449 Divisions - Radio
Folder 460 - 489 Wiring, Special Services
Folder 500 - 529 Station Equipment
Folder 530 - 559 Private Branch Exchanges
Folder 570 - 598 Teletypewriter, Data Services
Folder 620 - 649 Outside Plant
Folder 660 - 984 Vehicles, Supplies, Gen'l
Folder 950 - 993 Division (8 Digits Series)

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