Repair Book from 46001 whilst based at Laira TMD (LA).
The book was new to the locomotive in May 1980.
46001 (D138) Was Withdrawn From Service whilst based at Gateshead TMD (GD) in December 1981 and was scrapped by BREL - Swindon Works in July 1982.

More information can be found here Wikipedia - BR Class 46  -  Preserved-Diesels Website  -  WNXX.COM  -  Llangollen Diesels - 46010