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).
Comparison blueprint of different types of trunnion bearings.
| Identifier | WestWitteringFiles\T\2January1929-June1929\ Scan123 | |
| Date | 8th February 1928 | |
| INDIA. SS.{S. Smith} AMERICAN TYPE STANDARD TYPE_G53671 STIFFENED TYPE_G53671 STANDARD TYPE_G76832 STIFFENED TYPE_Ex3788 COMPARISON of TRUNNION BEARINGS RB{R. Bowen} 8-2-28 | ||