Here are some links to railway and model railway sites; including ones with information about the Elham Valley Railway.
'The Elham Valley Line', Hart B, 1984 Wild Swan (currently out of print)
'The Elham Valley Railway', Hart B. Wild Swan 2015
'Branch Lines around Canterbury', Mitchell V & Smith K, 1995 Middleton Press
Winter 1973/4, Cantium a magazine of Kent Local History
See the 12 minute film on You Tube by using this link
On Line Video
Trams, trolleybuses, buses, steam and electric railways, paddle-steamers, shipping; vintage film from 1896 to footage of today's operating tramways ONLINE VIDEO offers over 130 videos.
The South Eastern & Chatham Railway Society
Southern Electric Group
Website providing information on liveries used on railway buildings in Britain