Northwestern Knitting Company Factory building

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Northwestern Knitting Company Factory
Northwestern Knitting Company Factory.jpg
The Northwestern Knitting Company Factory from the southwest
Northwestern Knitting Company Factory building is located in Minnesota
Northwestern Knitting Company Factory building
Northwestern Knitting Company Factory building is located in the US
Northwestern Knitting Company Factory building
Location 718 Glenwood Ave., Minneapolis, Minnesota
Coordinates 44°58′50″N 93°17′18″W / 44.98056°N 93.28833°W / 44.98056; -93.28833Coordinates: 44°58′50″N 93°17′18″W / 44.98056°N 93.28833°W / 44.98056; -93.28833
Built 1904
Architect Bertrand & Chamberlain, John Wunder
NRHP reference # 83000904[1]
Added to NRHP June 3, 1983

The Northwestern Knitting Company Factory, also known as Munsingwear Corporation and later as International Market Square, is a former factory building in the Sumner-Glenwood neighborhood of Minneapolis, Minnesota, United States. The company was founded in 1888 by George D. Munsing, who invented a method of plating wool fibers with silk and cotton to make the union suit more comfortable. The company received financial backing from Clinton Morrison and Charles Alfred Pillsbury, who were prominent businessmen in the Minneapolis flour milling industry. This style of underwear, patented in 1891, proved to be very popular, and the company eventually became the world's largest manufacturer of underwear. The company changed its name in 1919 to Munsingwear.[2][3]

The company built five brick and concrete buildings between 1904 and 1915, eventually creating a complex covering 650,000 square feet (60,000 m2) and employing up to 2000 workers. The five- to eight-story buildings had long rows of windows, and although the buildings mostly had a plain appearance, the architects added some details such as slightly projecting cornices, fretwork friezes, and fluted Doric columns. The oldest of the buildings, along Glenwood Avenue, is notable for being the city's first entirely reinforced concrete building. Engineer C.A.P. Turner used concrete columns shaped like a mushroom on top, and he eventually patented this process, which was widely used.[2][3]

The factory eventually closed in 1981 when the economy reduced demand for Munsingwear's products. In 1985, the buildings were renovated and the complex was renamed International Market Square, which housed offices, shops, and over 100 showrooms for home and office products. The renovation included a five-story atrium created by roofing over an old courtyard where rail tracks once served the complex. In 2005, some portions of the building were renovated into 96 loft apartments.[2] This was a leading example of adaptive reuse in Minneapolis.[3] The building was listed on the National Register of Historic Places in 1983.[1]


  1. ^ a b National Park Service (2008-04-15). "National Register Information System". National Register of Historic Places. National Park Service. 
  2. ^ a b c Millett, Larry (2007). AIA Guide to the Twin Cities: The Essential Source on the Architecture of Minneapolis and St. Paul. 
  3. ^ a b c "Northwestern Knitting Company Factory". Minneapolis Heritage Preservation Commission. February 2007. Retrieved 2009-01-01.