List of class I and class II roads and numbers
The official title of this booklet is List of class I and class II roads and numbers. Published by HMSO in 1923, 123 pages, 22cm height. A single press run of 5,000 copies resulted in less than a third being sold (documented in MT 39/246).
Most sabristi know this as the fabled "1922 Roads List".
The Oxford New Bodleian Library and the British Library have copies.