| Year | 1921 |
| Date | 25-Aug |
| Volume | 45 |
| Issue | 1,061 |
| Page | 160 |
| Category | Radio Engineering |
| Part | |
| Title | Latest Wireless Information |
| Author | |
| Notes | A New Wireless Invention. Wireless Exhibits at the Engineering Exhibition, Olympia. Wireless Press (English). Wireless Press (French). Replies to Wireless Enquiries, amended complete wireless circuit |