Share your favorites on Show & Tell

Collect BSPs - Bell System Practices

In Telephones > Show & Tell.
All items133215 of 133358Sessions Electric Alarm ClockWaterbury Crackle Pink Alarm Clock
Love it
Like it

Add to collection

Please create an account, or Log in here

If you don't have an account, create one here.

Create a Show & TellReport as inappropriate

Posted 5 years ago


(14 items)

BSPs (Bell System Practices) are useful to phone collectors. They contain technical details on the model numbers, features, connection and servicing of Bell System products.

They were published from about the 1920s until about the turn of the century in several loose leaf sizes, suitable for updating as features changed, and in bound form -- primarily in compact sizes for installers and other field personnel.

More details here:

Please contact me if you have some spares or readable scans to share.

Want to post a comment?

Create an account or login in order to post a comment.