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).
Blueprint diagram comparing two designs for a column stay attachment, one effective and one not.
| Identifier | ExFiles\Box 17\3\ Scan186 | |
| Date | 8th March 1928 guessed | |
| COLUMN STAY ATTACHMENT HEAVY TUBULAR STAY ATTACHED TO DASH CLOSE TO COLUMN SUPPORT VERY EFFECTIVE TUBULAR SECTION L SECTION LIGHT SHEET METAL STAY. NOT MUCH GOOD | ||