Diesel Multiple Units & Railcars
RUSSELL, J.H.; KARAU, Paul & COPSEY, John
An Illustrated History of Great Western Diesel Railcars
Very fine study by Jim Russell first published in 1985. With further information subsequently available, Paul Karau and John Copsey produced a 24 page supplement shortly after the book appeared.
SIMPSON, L.
British Railways First Generation DMU
Privately published listing of DMU's giving vehicle type, lot number, manufacturer and date of introduction.
The Chiltern Heritage DMU Project
Class 115 - A Short History and a Tale of the Restoration of a D.M.U.
