In the early 1960s Teletype took on the assignment of writing Bell System
Practices covering their equipment.  Previously Teletype had written its
own customer manuals and then some office within the Bell System had turned
them into BSPs.  These later Teletype manuals consist of just the front 
cover and revision and contents pages, followed by the BSPs that make up
the manual.  The Teletype-written BSPs all have the "TC" suffix after the
BSP number.

TC BSPs may be removed from this directory, as there is getting to be too
much stuff for one CD ROM and the documents are duplicated in the Teletype
Manuals CD ROM.