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).
Drawing of a 3 1/2 Litre S.S. frame with dimensions.
| Identifier | ExFiles\Box 126\5\ scan0158 | |
| Date | 8th March 1938 guessed | |
| 3½ LITRE. S.S. FRAME. SS{S. Smith} 80. 42½" 30⅞" 3¾" 2" 3¾" 4½" 2" 2⅞" 35½" 42½" 30" 2½" 6⁹/₁₆" 7¼" 44" 3½" 4½" 2" 8" 3⅝" 30¼" 38¼" 6¼" 38" 44" APPROX. 26½" 53¾" 19½" 32¾" | ||