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 with handwritten calculations and an office date stamp.
| Identifier | ExFiles\Box 26\4\ Scan259 | |
| Date | 8th May 1925 | |
| Handwritten (rotated 90 degrees): 13458 X3409 X8420 ___ 15940 Stamped: ROLLS-ROYCE LIMITED. PRINT ROOM 8 - MAY 1925 DERBY. | ||