| Section
| Date
| Issue
| Size
| Title
|
| M25.05.1PT | 1957-11-01 | A | 117.94 KB | Telephone Set Requirements (Form P-2255) |
| M25.35.1PT | 1959-04-15 | A | 274.42 KB | Coin Box Burglar Alarms |
| M25.59PT X1 | 1958-06-01 | A | 140.89 KB | Automatic Dialers - Special Study of Dialaphone Installations |
| M25.75MT | 1946-09-01 | C | 5.21 MB | Power Supply Arrangements - P.B.X.'s, Station Systems and Key Equipments - General Requirements |
| M25.75MT A | 1953-06-01 | B | 264.09 KB | Power Supply Arrangements - P.B.X.'s, Station Systems and Key Equipments - General Requirements |
| M25.77PT | 1958-11-01 | F | 1.63 MB | Work Sheets |
| M28.20.2PT | 1963-03-01 | A | 84.16 KB | Plant Service Center Operations - Station Number Cards - Transparent Windows |