Auto Electric Model Raiways with a chapter on Radio Control of Model Boats >Hardback,Very good condition. by Duncan Stubbs 1940. Covers the subject in huge detail. Perfect book for the collector/builder of train layouts.Some pretty complex stuff,not for the beginner,I'd say.
Some chapter headings:- Track layouts/Choice of control system/Automatic control/Wiring the circuit/The radio control of model boats etc.