A license under this chapter may be issued to a person carrying on the business of solicitor, peddler or transient merchant in this city through employees. Such employees shall carry a duplicate license issued to the employee, which license shall be obtained at the office of the Chief of Police upon compliance with the requirements of the chapter. If the business of solicitor, peddler or transient merchant in this city is carried on through agents who are not employees, or by consignees, or by an unincorporated firm or association, each person so conducting the business in this city shall be required to have a separate license, but not post a separate bond if one is posted by the corporation.