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
- Alfie (does not speak)
- Cranky (cameo)
- Ned (cameo)
- Max or Monty (cameo)
- Annie and Clarabel (cameo)
- Knapford station is missing tracks 5 and 6.
- In the fifth illustration, Ned has no lettering and half of Emily's running board is red.
- Emily's running boards are red instead of brown, her tender wheels are black instead of green and her valve gear is inclined.