Thomas the Tank Engine Wikia

How Does Percy Work?

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How Does Percy Work? is a magazine story.


Bertie is curious to know how Percy works as he is a steam engine. Percy does not know himself, so he asks his friends when he meets them along his journey. Afterwards, Percy tells Bertie how steam engines work.



  • The fourth illustration shows Gordon painted green to represent Henry.

I've come to you, my friend, as I need some redesigning; to be a stub page is so confining. Can you give me the words I deserve?

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