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).
Drawing of a Hispano front shoe with dimensions and a cross-section view.
| Identifier | ExFiles\Box 22\1\ Scan100 | |
| Date | 1st February 1924 guessed | |
| HISPANO FRONT SHOE. 12.2" A SECTN. AA.{D. Abbot-Anderson} 2.5" .7 .3 .30. .25 2.4 | ||