Div	Currently includes parts of...	References
	000	010 081	General methods
	100	167	Power
	200		Switching Systems
	300	363	Transmission, signaling systems and testing
	400	460 461 462 463	Customer Equipment
	500	500 501 502 503 506 508 510 512 514 518 529	Station Equipment (Telephone Sets)
	600
	700
	800
	900

	Name	size	Contains
	Instruction Manuals	-	Instruction Pamphlets for customers
	Miscellaneous	-	Other things (books)
	000-000-005	40k	Master Numerical Index (Description of first order group codes) (now with hyperlinks to available sections)
	460-000-006	10.8m	Alphabetic-Numeric Index, (Station, Key, PBX, Private Service Systems)
	Set Numbers	35k	A listing of all Western Electric set numbers (Under development)
	100 Years in the Bell System	4.0m	Western Electric magazine
	Phone Number Label templet	19k	Excel spreadsheet
	Bell System Picturephone ®	31m	Photo and magazine about the Picturephone ®

	About this site	and What are Bell System Practices?
	HighResVersions	If the PDF files in the sections above are not clear enough, higher resolution versions including the original 300dpi scans are available here

Visit My Telephone Collection Section. Includes educational information