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).
Summary of total and average monthly expenses from 1932 to 1935.
| Identifier | ExFiles\Box 82\4\ scan0137 | |
| Date | 17th June 1935 guessed | |
| 1932 - Expenses for 7 months ........ £2679 Average for 1 month ............. £ 283 1933 - Expenses for 12 months ....... £24316 Average for 1 month ............ £ 2026 1934 - Expenses for 12 months ....... £18088 Average for 1 month ............ £ 1507 1935 - Expenses for 4 months ........ £6350 Average for 1 month ............ £1588 | ||