The courses and distances showing the exact corporate limits of the City shall be filed at all times with the Clerk of the Circuit Court for Worcester County, the Commissioner of the Land Office and the Director of the Department of Legislative Reference. In addition, a copy of the courses and distances describing the corporate boundaries shall be on file in the office of the Mayor or of the City Manager. All the officials named in this section are hereby directed to file or record all such descriptions of corporate boundaries so filed with them, each in a suitable book or place, properly indexed and reasonably available for public inspection during normal business hours.