The districts listed in Section
3.1 are as shown, defined, and bounded on the map accompanying this By-law, entitled "Zoning Map of the Town of Southbridge, Assessors Maps (152 sheets), South bridge, Mass., revised to January 1, 1974, John E. O'Donnell and Associates, Auburn, Maine," as hereafter amended from time to time by the Town Council. The Zoning Map and all explanatory matter are hereby made a part of this By-law.