Bentley 4 1/2 Litre INSTRUCTION BOOK
Instructions on Running and Maintenance; new "Condensed Edition" edited by Rolls-Royce in 1933.
This was a service to those owners whose cars no longer were complete with Handbook/Owner's Manual. The new Instruction Book's tremendous advantage was it did contain all the details from the whole model-series (essential because many of the 'early cars' e.g. during regular service had been up-dated with modifications phased in over the years into the series) - and even a description on the Supercharger was added.
Opposite to the non-illustrated edition from 1933 this version shows several illustrations and added, too, has been a detailed description of the 'Autovac' fuel system (that alone some 20 pages).