| Year | 1920 |
| Date | 18-Mar |
| Volume | 42 |
| Issue | 986 |
| Page | 285 |
| Category | Replies to Business Enquiries |
| Part | |
| Title | Soft Iron Laminations and Vulcanite Tubing (Richford; Economic Electric; Ivorine Manufacturing; American Hard Rubber; Britannia Rubber and Kamptulikon; British Ebonite; North British Rubber |
| Author | |
| Notes |