|This article is about the Story Library book. You may be looking for the engine, the Engine Adventures book, the Railway Series book, the 1997 magazine story, the 2002 magazine story, the Random House book or the My Thomas Railway Library book.|
Percy is the eleventh book in the My Thomas Story Library series.
Percy loves playing tricks on the other engines and gets into trouble. He soon proves to be a brave and useful engine when he battles a flood to take some children home from the seaside.
- This book is loosely based on the stories, "Percy and the Signal" and "Percy's Promise" from the Railway Series book, Percy the Small Engine.
- Percy's coal bunker is green.