State of Wisconsin. “286”. Section: 1.08: State flag. http://www.netstate.com/states/symb/flags/wi_flag.htm2015年8月21日閲覧. "The department of administration shall ensure that all official state flags that are manufactured on or after May 1, 1981 conform to the requirements of this section. State flags manufactured before May 1, 1981 may continue to be used as state flags."