Application and Maintenance. Contributed by John Novack.

Contributed by John Novack.

Contributed by Dennis Hock.

The CMC 5328 SLEEVE CHEK®and CMC 5329 SLEEVE CHEK®-1 are pencil-size testers. They are used to verify that ground is returned and held on the sleeve lead of SXS selectors, connectors and repeaters when the equipment is seized.  Contributed by Paul Wills

Contributed by John Novack.

Contributed by John Novack.

Test set accommodates rotary and tone dialing. Bell System models use Western Electric components. Contributed and scanned by Steve Cichorsky. OCR by Remco Enthoven. Processing by Paul Fassbender.

Contributed by Dennis Hock.

Contributed by Dennis Hock.

Contributed by Dennis Hock.

Contributed by Dennis Hock.

Contributed by Dennis Hock.

POST OFFICE ENGINEERING DEPARTMENT.
TECHNICAL INSTRUCTIONS, XXV. (Provisional Issue.)
Automatic Telephone Exchange Systems.
Part 24A.-Apparatus-Description and Adjustment of Dial Mechanisms. DIAGRAMS.
(The Instruction relating to these Diagrams is issued separately.)
ENGINEER-IN-CHIEF'S OFFICE, GENERAL POST OFFICE, LONDON, E.C. 1., May, 1928.

Ad from Universal Controls Corporation, Carrollton, Texas

circa January, 1959

23 pages. Contributed by Ashley Simmons. Processed by Remco Enthoven and Paul Fassbender.

Federal Telephone & Radio.  30 pages.  NS-1800, NSE-120113, NSE-59882 and NSE-97800.  Contributed by Chris Mattingly and John Novack.

Circuit Assignment Numbers - Genoa Branch Circuits.  Scan quality did not permit reliable OCR.  Contributed by John Novack.