After organization, such zoning commission shall proceed to investigate and shall make a preliminary report to the city council with respect to the creation and designation of zoning districts within the city and appropriate regulations to be enforced within such districts. It shall hold public hearings upon such preliminary report, after due notice thereof, at such times and places as shall be appropriate, and after the conclusion of such hearings, it shall make and submit to the city council its final report and recommendations to the council its final report and recommendations to the council with reference to the creation, maintenance, and regulation of such zoning districts. (Ord. 188 § 6, 1954)