The roll contains c 60 waxed linen and ozalid drawings by British Railways Locomotive Drawing Office, Brighton of a electro diesel locomotive, a Class 73 general arrangement, details of conduits, and mechanical parts. Drawing number range W.13000 - 14229.

Class 71. Pipes, brackets, and cleats. Class 73/0. Lifting gear for the locomotive. Class 73/1. Lamp irons. Drivers cab door. General arrangements, including the layout of equipment inside. Gutters. Arrangement and details. for vents, louvres for the CO2 cylinders.