Other sites of interest:

History of the Wheel (contributed by Ms. Martin’s class)
Rolls-Royce Owners' Club (USA)
Rolls-Royce Enthusiasts' Club (UK)
Rolls-Royce Owners' Club (Australia)
The Archives of K.-J. Rossfeldt (Germany)
Silver Ghost Association (USA)
Ashley James' site on 1947 - 1955 era cars (UK)