old style was first brewed in 1902 by the g. heileman brewing company in la crosse, wisconsin under the name old style lager; it was popular in wisconsin, the chicago metro area, minnesota, eastern iowa, lincoln, nebraska, southwestern michigan, upper michigan, and fargo and grand forks, north dakota. it has been served at wrigley field for decades, and is popular with fans of the chicago cubs. the original heileman's old style brewery in la crosse is now owned by the city brewing company. it brews la crosse lager, which is based upon the original old style recipe and is kräusened for 30 days.