Here are some links to railway and model railway sites; including ones with information about the Elham Valley Railway.
'Along the Elham Valley', Hart B, March 1979 Railway Magazine Vol 125 Number 935 p. 112 - 115
'The Elham Valley Line', Hart B, 1984 Wild Swan (currently out of print)
'The Elham Valley Railway', Hart B. 2015 Wild Swan
'The Elham Valley Railway', Forwood M. 1975 Phillimore & Co (out of print)
'Branch Lines around Canterbury', Mitchell V & Smith K, 1995 Middleton Press
'The Origins of a Kentish Railway the Elham Valley Line', Forwood M, in
Cantium (Winter 1973/4) a magazine of Kent Local History.
Photos coutesy of Carol and Maurice Wellard
(whose copyright they are).
Photos of the rail mounted guns taken at Elham.
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
http://www.southeasternandchathamrailway.org.uk/
Southern Electric Group
http://www.southernelectric.org.uk
Website providing information on liveries used on railway buildings in Britain
National Railway Museum
Elham Valley Line Trust at Peene where items from the Elham Valley Railway can be seen
http://www.elhamvalleylinetrust.org/
Ashford Museum which has displayed information on the South Eastern Railway Works in the town
http://www.ashfordmuseum.co.uk