| Year | 1931 |
| Date | 14-May |
| Volume | 64 |
| Issue | 1,566 |
| Page | 471 |
| Category | Electrical |
| Part | |
| Title | An Electrically Operated "Volcano" |
| Author | T.M.E. |
| Notes | An Unusual and Interesting Model with Commercial Possibilities. General arrangement, front and side elevations showing construction of distributor, contact arm, lamp strip, wiring |