https://www.lrsoc.com/forum/forum_files/ServiceNewsletter51.pdf Service Newsletter No 51 – January 1955
https://www.lrsoc.com/forum/forum_files/ServiceNewsletter50.pdf Service Newsletter No 50 – November 1954
https://www.lrsoc.com/forum/forum_files/ServiceNewsletter47.pdf Service Newsletter No 47 – August 1954
https://www.lrsoc.com/forum/forum_files/ServiceNewsletter41.pdf Service Newsletter No 41 – February 1954
https://www.lrsoc.com/forum/forum_files/ServiceNewsletter40.pdf Service Newsletter No 40 – January 1954
https://www.lrsoc.com/forum/forum_files/Service%20Bulletin%2029%20Noise%20from%20Tappets.pdf 50029 (Internal) – Noise from Tappets / Valve Gear
https://www.lrsoc.com/forum/forum_files/ServiceBulletin2V1.pdf 5168 – 2/V1 FLYWHEEL RECLAMATION SCHEME
