The roll contains 12 waxed linen drawings by British Railways Locomotive Drawing Office, Brighton of electro-diesel mechanical parts. Drawing numbers W.12056 - W.13678.

Class 73/0. Partition doors. Class 73/1. Handbrake details. Arrangement of exhauster. Single drawing of Class 71. Roof details. Cab roof. Details of cab framework. Arrangement and details of cab sheeting.