Michael R. Bailey is a railway historian who has undertaken projects for museums in England, Canada and Denmark. He writes and lectures (and occasionally acts as a TV consultant) and was a consultant to UNESCO regarding the Rhaetian Railway's application for World Heritage status. A member of the Newcomen Society, he was its president 1995 - 1997; is a Trustee of the Museum of Science & Industry in Manchester; president of the museum Friends; and is a vice-president of the Stephenson Locomotive Society. Peter H. Davidson's career was in mechanical engineering, and design and construction of miniature locomotives. A consultant to the National Railway Museum and other museums, he was co-author of Canterbury & Whitstable Railway - Invicta Locomotive (2020), and has written several papers on early railway technology.