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).
Log of dates and notes concerning various vehicle models and prototypes from 1922-1923.
| Identifier | Morton\M22\ img191 | |
| Date | 30th August 1920 guessed | |
| HERON 40/50 WITH SERVO BRAKES changed to Pneu chem Tack & Servo 4-10-22 9-10-22 12-10-22 19-10-22 22-10-22 18-10-22 30-12-22 - SERVO FWB. 18-1-23 CURLEW? & SEAGULL C AND D OHV 40/50 & FWB (P1 Pro.) 12-10-22 9-12-22 19-1-23 20-1-23 23-1-23 23-1-23 Sports body (B.P) * 26-1-23 29-1-23 STORK PNEU FWB 14-10-22 19-10-22 20-1-23 29-1-23 STORK HERON & SEAGULL & FUTURE 40/50 's 17-1-23 BOTH 18-9-22 8-11-22 6-1-23 8-1-23 10-1-23 13-1-23 13-1-23 * 26-1-23 - abandon CURLEW 9-9-22 EAC & 40/50 22-9-23 13-10-23 [In blue ink] POST-WAR Design & Devt. Programme. 1918 - 1923 Mainly 40/50 * & New models [crossed out] Prototype Phantom I | ||