K2/9-10/88: 28 May - 10 June 1988. K2/26/88: 17-23 September 1988.
British Railways Locomotives operating manual AEI Sulzer D5176 etc Class 24.
British Railways Locomotives Operating Manual D11-D137 Crompton Parkinson Sulzer
British Railways; Eastern Operating Area #1 Supplement to the General Appendices
B.R. BRITISH RAILWAYS SUPPLEMENTARY OPERATING INSTRUCTIONS NO. 2 1960
British Railways Locomotives Operating Manual D11-D137 Crompton Parkinson/Sulzer
British Railways Supplementary Operating Instructions Eastern Region - 1964