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).
List of parts for the Condor .666 Reduction Gear, including gear casing and thrust bearing housing.
| Identifier | ExFiles\Box 38\6\ Scan100 | |
| Date | 23th October 1918 | |
| E.F.C. RECEIVED 23 OCT 1918 De6/CH221018. RR CONDOR .666 REDUCTION GEAR - 4240 - X3309. Please receive - G.6334 - Gear Casing. G.6235/8 - Thrust Bearing housing. 4 sets required. Dn. | ||