Subseries consists of the administrative and operational records of associated local unions kept by IBEW Local 1928. The majority of these records became a part of the IBEW Local 1928’s records as a result of the amalgamation of locals. The IBEW Systems Council U-29, made up of a group of Nova Scotian IBEW locals (1818, New Glasgow; 1089, Sydney; 1866, Malay Falls; 1867, Milton; 1876, St. Margaret’s; and 2146, Amherst) and Line Construction, represented the employees of the Nova Scotia Power Commission (NSPC) until 1972, when NSPC merged with the Nova Scotia Light and Power Company (represented by IBEW Local 1928) to become the Nova Scotia Power Corporation. Between 1973 and 1975, those locals that were previously part of U-29, transferred into Local 1928. Other IBEW Local records include those from 1165 (Windsor, Nova Scotia) and 1432 (Prince Edward Island).
Subseries also contains agreements, by-laws, and constitutions of other (non-IBEW) labour unions that IBEW Local 1928 worked with.