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).
Technical drawing showing the design and dimensions of a Hispano front shoe.
| Identifier | WestWitteringFiles\L\2Jan1924-March1924\ Scan28 | |
| Date | 1st February 1924 guessed | |
| HISPANO FRONT SHOE. 12.2" A A SECTN. A-A 2.5 .7 .3 .30 .25 2.4 | ||