Municipal Operators
KEELEY, Malcolm; RUSSELL, Monty & GRAY, Paul
Birmingham City Transport - A History of its Buses and Trolleybuses
KELLY, Paul
British Bus Systems - Liverpool's Buses
British Bus, Tram & Trolleybus Systems No. 9
KING, J.S.
Bradford Corporation Trolleybuses
The story of Britain's longest lived trolleybus undertaking
KING, Nicholas (ed.)
Fleet History of Maidstone Corporation 1904 - 1974
Publication F3