Post Office of the United Kingdom
Post Office Telecommunications Journal Volume 10 Part 2- Post Office Telecommunications Journal Volume 12 Part 1
- Post Office Telecommunications Journal Volume 12 Part 2
- Post Office Telecommunications Journal Volume 12 Part 3
- Post Office Telecommunications Journal Volume 12 Part 4
- Post Office Telecommunications Journal Volume 13 Part 2
- Post Office Telecommunications Journal Volume 13 Part 4
- Post Office Telecommunications Journal Volume 15 Part 3