Letting off Steam is a magazine story.


Percy startles everyone with his steam. Thomas has an idea and asks Daisy to help. Together they both startle Percy, who promises, that in future, he will not play silly games.



  • Henry's splashers are coloured blue.
  • It is said that Daisy startled Percy with her whistle, but diesels have horns, not whistles.
“Welcome to the Steamworks, my friend!”
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