- “Hooray for Rosie's rocks!”
- ―Everyone cheers
Stone Signal, republished as Rosie's Rocks in 2011, is a magazine story.
Mavis is away at the Works, so Rosie is running her quarry line. Rosie is bringing large rocks to the beach to help build a wall to hold back the high tides. Rosie chugs back to the quarry to collect more rocks, but when she does not return to the beach, the workmen are worried. They ring the Sodor Search and Rescue Centre and soon Harold's soaring through the sky looking for Rosie, but he cannot see the little engine anywhere. Unbeknownst to Harold, this is because Rosie has stalled inside a tunnel. Rosie is worried that she will never get rescued until she gets a great idea. Her crew takes large rocks from her trucks outside.
Soon, Harold flew by again. Suddenly, he saw the rocks in a field below. The rocks spell out the word HELP. Harold fetches Harvey and soon Rosie is rescued - all thanks to Rosie's rocks.
- Mavis's mention is omitted in the 2011 version.
- The Sodor Search and Rescue Centre is mentioned in the 2011 version.
- In one illustration, Rosie's wheels do not have spokes, her side rods are golden and two of her boiler bands are missing.