| Year | 1989 |
| Date | 06-Oct |
| Volume | 163 |
| Issue | 3,858 |
| Page | 424 |
| Category | Hot Air |
| Part | |
| Title | Judy. An "0" Gauge Stirling cycle hot air powered 0-4-0 narrow gauge locomotive |
| Author | Robby Robbins |
| Notes | Mono photographs by Dennis Miller. The design, layout of the locomotive, nothing new under the sun, general design |