| Year | 1952 |
| Date | 17-Jan |
| Volume | 106 |
| Issue | 2,643 |
| Page | 71 |
| Category | Nautical |
| Part | |
| Title | Model Power Boat News. The class "B" Record-holder - Sparky II |
| Author | "Meridian" |
| Notes | A bird's-eye view of the engine installed in the hull, crankcase, rotary valve and seating, cylinder, timing diagram, piston and connecting-rod, fuels |