May the Best Engine Win! is a Golden Book.
Emily challenges Thomas to a race to see who will be the first to finish their day's work.
- Sir Topham Hatt
- Gordon (cameo in Little Golden Book version)
- Edward (Golden Book and digital version only)
- Annie and Clarabel (do not speak)
- Cranky (cameo)
- Alfie (cameo)
- Ned (cameo)
- Max or Monty (cameo)
- Percy (mentioned only in Golden Book and digital version)
- In the Little Golden Book version, Gordon only has a cameo, Edward illustration and mention are omitted, while Percy is not mentioned.
- Knapford station is missing tracks 5 and 6.
- In the fifth illustration, Ned does not have lettering.
- Emily's running boards are red instead of brown, her tender wheels are black instead of green and her valve gear is inclined.