All municipal coliseums established and maintained under "An Act to enable cities and villages having a population not to exceed five hundred thousand (500,000), to establish and maintain public and municipal coliseums," approved June 27, 1913, as amended, which were in existence immediately prior to January 1, 1942, shall be treated as properly established under this Division 66 and may be continued to be maintained under this Division 66. All cities and villages whose electors have approved the levy of an annual tax for a public municipal coliseum under that Act may continue to levy the tax under this Division 66 without submitting the question of its levy to the electors for approval.
65 ILCS 5/11-66-11