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This article is about 'the Story Library book'. You may be looking for 'the diesel engine'.
“I'm a really lazy engine!”
―Dennis

Dennis (later re-titled, Dennis the Lazy Diesel and Thomas the Helpful Engine) is the forty-eighth book in the My Thomas Story Library series.

Plot

On his day off, Thomas is tricked into doing Dennis' work.

Characters

Trivia

Goofs

  • Dennis is incorrectly illustrated with spoked driving wheels, a grey crankshaft, navy wheels, and a red running board.
  • Throughout the book, Dennis is missing his number.
  • In the first illustration, Percy's coal bunker is missing and his siderod is not connected to his piston.
  • In the third illustration, Dennis' coupling rods are out of alignment.

Gallery