'DIESEL, ELECTRIC & STEAM LOCOMOTIVES ASSISTANCE (Double Heading) & ASSISTANCE IN REAR'. Charming and hugely informative little booklet with 14 pages of text dealing with double heading etc in various combinations of motive power types.
BTC Diesel Electric Steam Locomotives Assistance Manual BR 33062
BTC Diesel, Electric and Steam Locomotives Assistance of Double Heading
BTC/ BR Diesel Electric & Steam Locos Assistance Double Heading Rulebook c1950s
GE General Electric U30C Diesel-Electric Locomotive 1967 Sales Brochure
GENERAL MOTORS DIESEL-ELECTRIC & ELECTRIC LOCOMOTIVES
