The Stadium hosted the Chicago Blackhawks of the NHL from 1929–1994 and the Chicago Bulls of the NBA from 1967–1994. The arena was the site of the first NFL playoff game in 1932; the 1932, 1940, and 1944 Democratic National Conventions; and the 1932 and 1944 Republican National Conventions, as well as numerous concerts, rodeo competitions, boxing matches, political rallies, and plays. The interior of Chicago Stadium in 1930 prior to a Blackhawks game. The stadium was first proposed by Chicago sports promoter Paddy Harmon. Harmon wanted to bring an NHL team to Chicago, but he lost out to Col. Frederic McLaughlin. This team would soon be known as the Chicago Black Hawks (later 'Blackhawks'). Harmon then went on to at least try to get some control over the team by building a stadium for the Blackhawks to play in. He spent $2.5 million and borrowed more funds from friends, including James E. Norris in order to build the stadium. Opened on March 28, 1929 at a cost of $9.5 million, Chicago Stadium was the largest indoor arena in the world at the time. Detroit's Olympia stadium, built two years earlier, was a model for the Chicago stadium and had a capacity of over 15,000 people. It was also the first arena with an air conditioning system (though the system was fairly rudimentary by modern standards, and was memorably given to filling the arena with fog during late-season games). The Stadium sat 17,317 for hockey at the time of closure. Standees were allowed for many years, and often the official attendance figures in the published game summaries were given in round numbers, such as 18,500 or 20,000. The largest recorded crowd for an NHL game at the stadium was 20,069 for a playoff game between the Blackhawks and Minnesota North Stars on April 10, 1982.