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).
Cable detailing electrical supply specifications for Coverley, Spink Arms in Indianapolis, U.S.A.
| Identifier | ExFiles\Box 173\1\ img433 | |
| Date | 20th February 1934 | |
| He 20.2.34. COVERLEY, SPINK ARMS, (CABLE). INDIANAPOLIS, U.S.A. TWO HUNDRED VOLTS FIFTY CYCLES THREE PHASE. HIVES. | ||