Glen Hopkins : Photographs and much information on D5705's preservation on the East Lancs Railway

Graeme from SERA and the Class 20 Gallery : Co-Bo World intro page graphics

Mark Hoofe : Noel Machell photographs

Keith Sanders : Photographs

Russell Saxton : Photographs

Wyn Anderson : An extract from his article which first appeared Cumbrian Railways magazine

Rich Mackin / Martin Bray : Disposal details

Colin WIlliams : Photographs

Robin Gibbons : Page from "Locomotives of Australia" by Leon Oberg

Nic Doncaster : Australian X-Class article

Steve Johnson : Irish A-Class article