The City is hereby divided into three height districts which shall be known as:
(a) No. 1 (or Thirty-Five Feet) Height District, designated on the Zone Map by (-1).
(b) No. 2 (or Fifty Feet) Height District, designated on the Zone Map by (-2).
(c) No. 3 (or Unlimited) Height District, designated on the Zone Map by (-3).
(Ord. 42-55. Passed 2-21-55.)