MDM Locomotive Works
MDM Locomotive Works was founded by Jim Murray in 1997. Jim operated the company until his death in 2013.
- Wandering Locomotive Book: Jim Murray and MDM Locomotive Works (PDF)
- MDM Locomotive 2006 Catalog (PDF)
- MDM Locomotive Price List January 2013 (PDF)
Lee Wright designed the original patterns used by MDM Locomotive Works for building the HTC Trucks. The trucks featured a wheelbase of 20 3/8 inches, wheel diameter 5 inch and axles of 5/8 inch diameter with ball bearing journals.