UK & Ireland
HIGGINS, S.H. Pearce
The Wantage Tramway: A History of the first Tramway to adopt Mechanical Traction
HIGGINSON, Martin
Tramway London: Background to the abandonment of London's trams 1931 - 1952
HIGGS, Philip & MILLINGTON, James
The OMO Cars - The Story of Blackpool's One Man Operated tramcars
HILDITCH, Geoffrey
Halifax Passenger Transport - From 1897 to 1963 Trams, Buses, Trolleybuses
Oakwood Series X84