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).
Page two of a letter discussing the high cost of filters compared to competitors and sourcing alternatives.
| Identifier | ExFiles\Box 44\1\ Scan306 | |
| Date | 11th May 1929 guessed | |
| - 2 - At present the cost of these filters is high compared with the "Purolator" or other cloth filters and it remains for us to bring the makers to reason in this respect. We should like to supply samples if they cannot be obtained in England. Yours faithfully, ROLLS ROYCE OF AMERICA, INC. Maurice Olley | ||