Use "Contact Us" to report anything that doesn't work or is confusing. Tell us what you like, what you don’t like, and make any suggestions for future additions (to be added to our already long wish list).


The TCI Library Administrators

You may also contact us through the following e-mail address:

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Major TCI Library Sections

  • Bell System Practices
    • Index Documents
    • Handbooks
    • Early AT&T Specifications
    • BSPs: Letter-coded
    • BSPs: Numeric Division Numbers
    • Canadian Practices
  • Bruce Crawford Switching Library
    • WEco Switching Documents
    • SDs and CDs
    • Manufacturer Catalogs and Data Sheets
  • Wiring Diagrams
  • Catalogs, Manuals and Educational Documents
    • Employee Publications
    • Marketing Brochures
    • Training Manuals
To browse the Library by category, start with Browse the Library in the Black Menu Bar above and select Document Repository.

TCI Members Only Documents (MOD)
In addition to documents in the Library, TCI Members can access documents that were contributed to TCI with the restriction that they are made available to TCI Members only, and are not to be posted on any publicly available web site.
Most are large manufacturer catalogs, restricted distribution documents or files that have had extensive processing by TCI volunteers, such as page straightening, clean-up and OCR.
The MOD area is accessed from the Members Area menu entry on the TCI site or the Members Only Docs link under TCI Sites in the menu above on this page.

New User?

Read the articles under "Introduction" in the black menu bar above.

Recent Contributors

Thanks for new documents from Chuck Hensley, John Gilbert, Chuck Batson, Alan David, Steve Flocke, Paul Wills, Dave Gruger, Jim Prather, John Stancliff, Sam Etler, John Novack, Clint Gilliland, Steve Cichorsky and Paul Fassbender.

Please add your name to this list!

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Hints for using the TCI Library

"Menu Bar" for site navigation.
Many menu choices are hidden until you mouse over the menu.  If you want help getting started, see the links under the word "Introduction" in the Menu Bar.
The user interface is oriented toward the user’s choice to either Browse or Search for information.  The Browse the Library menu entry offers many quick links to move around the Library quickly.  Try it!

Three search options.
The Library’s keyword-based searches, called Basic Search and Advanced Search, accept keywords as short as 2 characters (WE, AE, etc.) and search strings up to 255 characters.  If you get more than 1,000 items, refine your search or try the Google Search option.
Library INBOX.
The INBOX may hold some files that have been submitted but not fully processed into the Library.  These are often topics of current discussion on the TCI Listserv.
Finding BSPs.
Many BSPs are currently only identified by BSP number. If a text search doesn’t produce a BSP, try looking in one of the many BSP index documents to find a BSP number for the product you are researching just as you would do if referencing a paper library of the BSPs. Then enter the BSP number in the search box.



Telephone Collectors International was incorporated under the laws of the state of Kansas on May 13, 1986. The goal of the organization is "to educate the public, as well as the members of the Corporation, regarding the history of telephony, the value of old telephones and related items, their collectability and preservation; to research telephone history and publish and provide literature thereon; to promote the public exhibition of old telephones and related items; and to promote common courtesies and guidelines for use by the public." Telephone Collectors International is recognized by the Internal Revenue Service as a 501(c)(3) organization, to which U.S. tax deductible contributions can be made.