- 1Reference: IG6/7/3/5
Title: Intercom Vol. III. No 5. Includes: - Foreword by R K Fleming focusing on recent reports of faults ...
Level of description: item
Date Free Text: May 1950
Production date: From: 1950 To: 1950 - 2Reference: IG6/7/4/4
Title: Intercom Vol IV No 4. Includes: - J R Slatter leaving the company after five and a half years, inc...
Level of description: item
Date Free Text: April 1951
Production date: From: 1951 To: 1951