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).
Table comparing the production output of Packard, REO, Studebaker, and Willys-Overland over four months.
| Identifier | ExFiles\Box 19\4\ Scan340 | |
| Date | 17th August 1931 guessed | |
| Company. Feb. March April May Remarks PACKARD 1250 1250 800 Output greatly (approx) (approx) (approx) curtailed in May to allow alterations. REO 806 1201 1023 1737 STUDEBAKER 4360 7011 7076 6254 WILLYS-OVERLAND 7000 10,000 9000 7500 (approx) (approx) (approx) (approx) 7. | ||