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).
Cost details for four engine block components, broken down by material, labour, and burden.
| Identifier | ExFiles\Box 97\2\ scan0229 | |
| Date | 1st December 1942 guessed | |
| COST DETAILS. Part No. Material Labour Burden TOTAL D9745 282.489/- 59.504/- 178.512/- 520.505/- 1.278/- .269/- .808/- 2.355/- per lb. per lb. per lb. per lb. D4480 43.673/- 9.462/- 28.386/- 81.521/- 1.278/- .277/- .831/- 2.386/- per lb. per lb. per lb. per lb. D13256 156.614/- 48.960/- 146.880/- 352.454/- 1.278/- .400/- 1.199/- 2.877/- per lb. per lb. per lb. per lb. D13257 156.614/- 48.960/- 146.880/- 352.454/- 1.278/- .400/- 1.199/- 2.877/- per lb. per lb. per lb. per lb. | ||