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).
The decision to keep or return Warnington and Vibrophone horns.
| Identifier | ExFiles\Box 59\3\ Scan011 | |
| Date | 20th May 1913 | |
| X1069 Wor{Arthur Wormald - General Works Manager}/SM5/L20513 Re Warnington Horn. - X.334 Hy{Tom Haldenby - Plant Engineer} . 20/5/13 Will you please inform us if it is your intention to keep the Warnington and Vibrophone horns which we obtained on approval some little time ago. Otherwise the Order Office wish to return them immediately to the makers. p. Wor.{Arthur Wormald - General Works Manager} | ||