| Year | 1921 |
| Date | 29-Dec |
| Volume | 45 |
| Issue | 1,079 |
| Page | 570 |
| Category | Model Marine Notes |
| Part | 7 |
| Title | Practical Model Power Boat Building |
| Author | Edward W.Hobbs |
| Notes | The T.B.D. Model hull, small quick firing gun, plan & elevation of the electric mechanism in position, general arrangement & detail drawing |