A student here needs to identify some enumeration areas for the 1991 census. It's tricky because it involves an island with several unincorporated places, and we don't have a map for this area for 1991.
The SGC will be 59024--- with three digits for each EA.
The place is Salt Spring Island, part of Capital Regional District Subd. A. Subdivision A includes other nearby islands as well, so the researcher can't use it. Is it possible to find the EA numbers for Salt Spring Island on a 1991 map in your library in Ottawa?