The roll contains c 70 waxed linen and paper drawings of general arrangements of diesel electric locomotives for the following overseas railways; Central Railway of Peru, Belgian National Railways, New South Wales Government Railways, RENFE, Luxembourg State Railways, Central Argentine Railway, Pakistan Western Railway, Córas Iompair Éireann, Paulista Railway, Ceylon Government Railways, Central Railway of Brazil, Victorian Government Railway, Queensland Rail Limited, Canadian National Railways, Indian Government Railways, Mexico Railway, Central Uruguay Railway, Iran Railway, Belgian Congo, Miferma Mining Co (Sahara), Western Australian Government Railway, Buenos Aires & Pacific Railway, Burma Railway, Malayan Railway, Spain Railway, Thailand Railway, Iraqi State Railways, Gold Coast Government Railway, South African Railways. The roll also contains British Transport Commission weight diagrams and bogie arrangements.