Be it further enacted, That all records and accounts of every office, department or agency of the city shall be open to inspection by any citizen of Cookeville, any representative of a citizens' organization of Cookeville or any representative of the press at all reasonable times and under reasonable regulations established by the city manager or city council, except health and personnel records of a confidential nature, and records and documents the disclosure of which would tend to defeat the lawful purpose which they are intended to accomplish.