Series 1: annual reports, 1922-1962 (not complete)
Series 2: minutes of the Executive Council and Sub-Executive Committee, 1912-1993 (not complete)
Series 3: conference reports, 1940-1985
Series 4: rule books
Series 5: other papers - Electrical Supply Industry Joint Industrial Council minute books
Series 6: Branch records including Darlington, Littlehampton, Maryport, Middlesborough, Newferry, Newport, Nottingham North, Peckham, Runcorn on Widnes, Stoke on Trent and Worthing.