The city clerk of a city of the first class shall have the custody of all laws and ordinances and shall keep a correct journal of the proceedings of the city council. After the period of time specified by the State Records Administrator pursuant to the Records Management Act, the city clerk may transfer such journal of the proceedings of the city council to the State Archives of the Nebraska State Historical Society for permanent preservation. He or she shall also perform such other duties as may be required by the ordinances of the city.