The Coalbrookdale locomotive was an early steam locomotive built by Richard Trevithick, it is now heavily regarded as the very first steam locomotive.
The Coalbrookdale locomotive first appeared in The Railway Series: Surprise Packet, and in the 1979 annual. It also appeared in a Thomas & Friends Japanese documentary, Hashire! The "Thomas the Tank Engine and Friends" Steam Locomotive is Alive.
- The Coalbrookdale locomotive was mentioned on The Official Website's Twitter. 
- Theo is partially based on the Coalbrookdale locomotive.