The roll contains three waxed linen drawings by British Railways Locomotive Drawing Office, Brighton of frames, pipes and supports for electro diesel locomotives. Drawing numbers W.12839; W.12915; W.12928.

Class 73/0. Timber framework for the draught seals of driver cab doorClass 73/1. Arrangement of window wipers and hooter pipes. Arrangement of No. 2 control frame support and floor above inductive shunts.