One original of the Zoning District Map shall be filed in the office of the City Secretary and labeled as “Official Zoning Map of the City of Sansom Park, Texas–Ordinance No. XXXX.” This copy shall be the official Zoning District Map and shall bear the signature of the Mayor, attested by the City Secretary, and shall bear the seal of the City under the following words: “This is to certify that this is the Official Zoning Map referred to in Section 2.3 of the Zoning Ordinance, Ordinance No. XXXX of the City of Sansom Park, Texas.” This copy shall be referred to as the Original Zoning Map as record of history and not be changed in any manner. A second Official Zoning Map shall be maintained by the City and shall be amended from time to time. In case of any question, this copy, together with amending ordinances, shall be controlling.