From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Report log regarding the lubrication of clutch trunnion ball races.
| Identifier | ExFiles\Box 20\1\ Scan006 | |
| Date | 20th April 1912 | |
| R.R. 514 8 1/2 H1 (X. 435. 14.12.11) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2227. [Initials] X872 Section 1300 Description: Lubrication of clutch trunnion ball races Date | Miles | REPORT 20/4/12 | | Sheet from Mr Royce received 27-4-12 See Special folder. Visits Mr Bailey. 16/5/12 | | Waits material 14/6/12 | | " " 7/9/12 | | " " 25/9/12 | | " " | ||