The roll contains c 10 tracing paper drawings of electrical equipment layouts and welded assemblies for Southern Railway booster and electro-diesel locomotive. Drawing number P14016; P14017.

Class 71. Welded assemble of No. 1 equipment frame and No. 2 equipment frame. Class 74. SR booster locomotive cleat components. Layouts and conduits under No. 1 equipment frame. Layout of cables on side of bogie (both classes). Layout of equipment in No. 1 frame. Assembly of the bars in No. 2 case. Part assembly of No. 1 equipment frame (back and front). . Layout of cable connections, camshaft controls frame to transformer.